diff --git a/src/generated.rs b/src/generated.rs
index b8ee1a76..fbd254c4 100644
--- a/src/generated.rs
+++ b/src/generated.rs
@@ -40,7 +40,7 @@ pub const XDR_FILES_SHA256: [(&str, &str); 13] = [
     ),
     (
         "xdr/Stellar-contract-spec.x",
-        "f0655f82e0a28a79e067c02f427cc709db1e4323a50c9b85f730f812b9612dbd",
+        "cf99fae0d9d977d47a83b868cb503948763195e9b326c7778c86070b764a3cbd",
     ),
     (
         "xdr/Stellar-contract.x",
@@ -5003,6 +5003,9 @@ pub use sc_meta_entry::*;
 mod sc_spec_doc_limit;
 #[allow(unused_imports)]
 pub use sc_spec_doc_limit::*;
+mod sc_spec_type_name_limit;
+#[allow(unused_imports)]
+pub use sc_spec_type_name_limit::*;
 mod sc_spec_type;
 #[allow(unused_imports)]
 pub use sc_spec_type::*;
diff --git a/src/generated/sc_spec_event_v0.rs b/src/generated/sc_spec_event_v0.rs
index 13d0c941..3d5d219c 100644
--- a/src/generated/sc_spec_event_v0.rs
+++ b/src/generated/sc_spec_event_v0.rs
@@ -8,7 +8,7 @@ use super::*;
 /// {
 ///     string doc<SC_SPEC_DOC_LIMIT>;
 ///     string lib<80>;
-///     SCSymbol name;
+///     string name<SC_SPEC_TYPE_NAME_LIMIT>;
 ///     SCSymbol prefixTopics<2>;
 ///     SCSpecEventParamV0 params<>;
 ///     SCSpecEventDataFormat dataFormat;
@@ -29,7 +29,7 @@ use super::*;
 pub struct ScSpecEventV0 {
     pub doc: StringM<1024>,
     pub lib: StringM<80>,
-    pub name: ScSymbol,
+    pub name: StringM<256>,
     pub prefix_topics: VecM<ScSymbol, 2>,
     pub params: VecM<ScSpecEventParamV0>,
     pub data_format: ScSpecEventDataFormat,
@@ -42,7 +42,7 @@ impl ReadXdr for ScSpecEventV0 {
             Ok(Self {
                 doc: StringM::<1024>::read_xdr(r)?,
                 lib: StringM::<80>::read_xdr(r)?,
-                name: ScSymbol::read_xdr(r)?,
+                name: StringM::<256>::read_xdr(r)?,
                 prefix_topics: VecM::<ScSymbol, 2>::read_xdr(r)?,
                 params: VecM::<ScSpecEventParamV0>::read_xdr(r)?,
                 data_format: ScSpecEventDataFormat::read_xdr(r)?,
@@ -72,7 +72,7 @@ impl WriteXdr for ScSpecEventV0 {
 pub struct ScSpecEventV0View<'a> {
     pub doc: StringMView<'a, 1024>,
     pub lib: StringMView<'a, 80>,
-    pub name: ScSymbolView<'a>,
+    pub name: StringMView<'a, 256>,
     pub prefix_topics: VecMView<'a, ScSymbolView<'a>, 2>,
     pub params: VecMView<'a, ScSpecEventParamV0View<'a>>,
     pub data_format: ScSpecEventDataFormat,
@@ -85,7 +85,7 @@ impl From<&ScSpecEventV0View<'_>> for ScSpecEventV0 {
         Self {
             doc: v.doc.to_stringm(),
             lib: v.lib.to_stringm(),
-            name: (&v.name).into(),
+            name: v.name.to_stringm(),
             prefix_topics: v.prefix_topics.to_vecm_from(),
             params: v.params.to_vecm_from(),
             data_format: v.data_format,
@@ -124,7 +124,7 @@ impl ScSpecEventV0View<'_> {
         w.enter_depth();
         w.write_len_prefixed(self.doc.as_slice());
         w.write_len_prefixed(self.lib.as_slice());
-        self.name.const_write_xdr(w);
+        w.write_len_prefixed(self.name.as_slice());
         {
             w.enter_depth();
             let __s0 = self.prefix_topics.as_slice();
diff --git a/src/generated/sc_spec_type_name_limit.rs b/src/generated/sc_spec_type_name_limit.rs
new file mode 100644
index 00000000..4a908fda
--- /dev/null
+++ b/src/generated/sc_spec_type_name_limit.rs
@@ -0,0 +1,10 @@
+#[allow(unused_imports, clippy::wildcard_imports)]
+use super::*;
+
+/// ScSpecTypeNameLimit is an XDR Const defined as:
+///
+/// ```text
+/// const SC_SPEC_TYPE_NAME_LIMIT = 256;
+/// ```
+///
+pub const SC_SPEC_TYPE_NAME_LIMIT: u64 = 256;
diff --git a/src/generated/sc_spec_type_udt.rs b/src/generated/sc_spec_type_udt.rs
index 82944bfd..8e82354c 100644
--- a/src/generated/sc_spec_type_udt.rs
+++ b/src/generated/sc_spec_type_udt.rs
@@ -6,7 +6,7 @@ use super::*;
 /// ```text
 /// struct SCSpecTypeUDT
 /// {
-///     string name<60>;
+///     string name<SC_SPEC_TYPE_NAME_LIMIT>;
 /// };
 /// ```
 ///
@@ -22,7 +22,7 @@ use super::*;
 )]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 pub struct ScSpecTypeUdt {
-    pub name: StringM<60>,
+    pub name: StringM<256>,
 }
 
 impl ReadXdr for ScSpecTypeUdt {
@@ -30,7 +30,7 @@ impl ReadXdr for ScSpecTypeUdt {
     fn read_xdr<R: Read>(r: &mut Limited<R>) -> Result<Self, Error> {
         r.with_limited_depth(|r| {
             Ok(Self {
-                name: StringM::<60>::read_xdr(r)?,
+                name: StringM::<256>::read_xdr(r)?,
             })
         })
     }
@@ -50,7 +50,7 @@ impl WriteXdr for ScSpecTypeUdt {
 /// const contexts and convertible to the owned type via [`From`]/[`Into`].
 #[derive(Clone, Debug, Hash, PartialEq, Eq, PartialOrd, Ord)]
 pub struct ScSpecTypeUdtView<'a> {
-    pub name: StringMView<'a, 60>,
+    pub name: StringMView<'a, 256>,
 }
 
 #[cfg(feature = "alloc")]
diff --git a/src/generated/sc_spec_udt_enum_v0.rs b/src/generated/sc_spec_udt_enum_v0.rs
index 965e4f30..19282d5c 100644
--- a/src/generated/sc_spec_udt_enum_v0.rs
+++ b/src/generated/sc_spec_udt_enum_v0.rs
@@ -8,7 +8,7 @@ use super::*;
 /// {
 ///     string doc<SC_SPEC_DOC_LIMIT>;
 ///     string lib<80>;
-///     string name<60>;
+///     string name<SC_SPEC_TYPE_NAME_LIMIT>;
 ///     SCSpecUDTEnumCaseV0 cases<>;
 /// };
 /// ```
@@ -27,7 +27,7 @@ use super::*;
 pub struct ScSpecUdtEnumV0 {
     pub doc: StringM<1024>,
     pub lib: StringM<80>,
-    pub name: StringM<60>,
+    pub name: StringM<256>,
     pub cases: VecM<ScSpecUdtEnumCaseV0>,
 }
 
@@ -38,7 +38,7 @@ impl ReadXdr for ScSpecUdtEnumV0 {
             Ok(Self {
                 doc: StringM::<1024>::read_xdr(r)?,
                 lib: StringM::<80>::read_xdr(r)?,
-                name: StringM::<60>::read_xdr(r)?,
+                name: StringM::<256>::read_xdr(r)?,
                 cases: VecM::<ScSpecUdtEnumCaseV0>::read_xdr(r)?,
             })
         })
@@ -64,7 +64,7 @@ impl WriteXdr for ScSpecUdtEnumV0 {
 pub struct ScSpecUdtEnumV0View<'a> {
     pub doc: StringMView<'a, 1024>,
     pub lib: StringMView<'a, 80>,
-    pub name: StringMView<'a, 60>,
+    pub name: StringMView<'a, 256>,
     pub cases: VecMView<'a, ScSpecUdtEnumCaseV0View<'a>>,
 }
 
diff --git a/src/generated/sc_spec_udt_error_enum_v0.rs b/src/generated/sc_spec_udt_error_enum_v0.rs
index 07a96825..4a29ea8e 100644
--- a/src/generated/sc_spec_udt_error_enum_v0.rs
+++ b/src/generated/sc_spec_udt_error_enum_v0.rs
@@ -8,7 +8,7 @@ use super::*;
 /// {
 ///     string doc<SC_SPEC_DOC_LIMIT>;
 ///     string lib<80>;
-///     string name<60>;
+///     string name<SC_SPEC_TYPE_NAME_LIMIT>;
 ///     SCSpecUDTErrorEnumCaseV0 cases<>;
 /// };
 /// ```
@@ -27,7 +27,7 @@ use super::*;
 pub struct ScSpecUdtErrorEnumV0 {
     pub doc: StringM<1024>,
     pub lib: StringM<80>,
-    pub name: StringM<60>,
+    pub name: StringM<256>,
     pub cases: VecM<ScSpecUdtErrorEnumCaseV0>,
 }
 
@@ -38,7 +38,7 @@ impl ReadXdr for ScSpecUdtErrorEnumV0 {
             Ok(Self {
                 doc: StringM::<1024>::read_xdr(r)?,
                 lib: StringM::<80>::read_xdr(r)?,
-                name: StringM::<60>::read_xdr(r)?,
+                name: StringM::<256>::read_xdr(r)?,
                 cases: VecM::<ScSpecUdtErrorEnumCaseV0>::read_xdr(r)?,
             })
         })
@@ -64,7 +64,7 @@ impl WriteXdr for ScSpecUdtErrorEnumV0 {
 pub struct ScSpecUdtErrorEnumV0View<'a> {
     pub doc: StringMView<'a, 1024>,
     pub lib: StringMView<'a, 80>,
-    pub name: StringMView<'a, 60>,
+    pub name: StringMView<'a, 256>,
     pub cases: VecMView<'a, ScSpecUdtErrorEnumCaseV0View<'a>>,
 }
 
diff --git a/src/generated/sc_spec_udt_struct_v0.rs b/src/generated/sc_spec_udt_struct_v0.rs
index daefc73f..ecc0a1e4 100644
--- a/src/generated/sc_spec_udt_struct_v0.rs
+++ b/src/generated/sc_spec_udt_struct_v0.rs
@@ -8,7 +8,7 @@ use super::*;
 /// {
 ///     string doc<SC_SPEC_DOC_LIMIT>;
 ///     string lib<80>;
-///     string name<60>;
+///     string name<SC_SPEC_TYPE_NAME_LIMIT>;
 ///     SCSpecUDTStructFieldV0 fields<>;
 /// };
 /// ```
@@ -27,7 +27,7 @@ use super::*;
 pub struct ScSpecUdtStructV0 {
     pub doc: StringM<1024>,
     pub lib: StringM<80>,
-    pub name: StringM<60>,
+    pub name: StringM<256>,
     pub fields: VecM<ScSpecUdtStructFieldV0>,
 }
 
@@ -38,7 +38,7 @@ impl ReadXdr for ScSpecUdtStructV0 {
             Ok(Self {
                 doc: StringM::<1024>::read_xdr(r)?,
                 lib: StringM::<80>::read_xdr(r)?,
-                name: StringM::<60>::read_xdr(r)?,
+                name: StringM::<256>::read_xdr(r)?,
                 fields: VecM::<ScSpecUdtStructFieldV0>::read_xdr(r)?,
             })
         })
@@ -64,7 +64,7 @@ impl WriteXdr for ScSpecUdtStructV0 {
 pub struct ScSpecUdtStructV0View<'a> {
     pub doc: StringMView<'a, 1024>,
     pub lib: StringMView<'a, 80>,
-    pub name: StringMView<'a, 60>,
+    pub name: StringMView<'a, 256>,
     pub fields: VecMView<'a, ScSpecUdtStructFieldV0View<'a>>,
 }
 
diff --git a/src/generated/sc_spec_udt_union_v0.rs b/src/generated/sc_spec_udt_union_v0.rs
index 0fc481ea..43834dac 100644
--- a/src/generated/sc_spec_udt_union_v0.rs
+++ b/src/generated/sc_spec_udt_union_v0.rs
@@ -8,7 +8,7 @@ use super::*;
 /// {
 ///     string doc<SC_SPEC_DOC_LIMIT>;
 ///     string lib<80>;
-///     string name<60>;
+///     string name<SC_SPEC_TYPE_NAME_LIMIT>;
 ///     SCSpecUDTUnionCaseV0 cases<>;
 /// };
 /// ```
@@ -27,7 +27,7 @@ use super::*;
 pub struct ScSpecUdtUnionV0 {
     pub doc: StringM<1024>,
     pub lib: StringM<80>,
-    pub name: StringM<60>,
+    pub name: StringM<256>,
     pub cases: VecM<ScSpecUdtUnionCaseV0>,
 }
 
@@ -38,7 +38,7 @@ impl ReadXdr for ScSpecUdtUnionV0 {
             Ok(Self {
                 doc: StringM::<1024>::read_xdr(r)?,
                 lib: StringM::<80>::read_xdr(r)?,
-                name: StringM::<60>::read_xdr(r)?,
+                name: StringM::<256>::read_xdr(r)?,
                 cases: VecM::<ScSpecUdtUnionCaseV0>::read_xdr(r)?,
             })
         })
@@ -64,7 +64,7 @@ impl WriteXdr for ScSpecUdtUnionV0 {
 pub struct ScSpecUdtUnionV0View<'a> {
     pub doc: StringMView<'a, 1024>,
     pub lib: StringMView<'a, 80>,
-    pub name: StringMView<'a, 60>,
+    pub name: StringMView<'a, 256>,
     pub cases: VecMView<'a, ScSpecUdtUnionCaseV0View<'a>>,
 }
 
diff --git a/xdr b/xdr
index 9c9c1459..46ed9010 160000
--- a/xdr
+++ b/xdr
@@ -1 +1 @@
-Subproject commit 9c9c145953e80990d6ff1ae3a6a973a0ce6d0694
+Subproject commit 46ed9010e912c2b29d45a5fa4182ebcbd80d2050
diff --git a/xdr-definitions-json/xdr.json b/xdr-definitions-json/xdr.json
index a5c73c9c..785d21d1 100644
--- a/xdr-definitions-json/xdr.json
+++ b/xdr-definitions-json/xdr.json
@@ -19,7 +19,7 @@
     },
     {
       "name": "xdr/Stellar-contract-spec.x",
-      "sha256": "f0655f82e0a28a79e067c02f427cc709db1e4323a50c9b85f730f812b9612dbd"
+      "sha256": "cf99fae0d9d977d47a83b868cb503948763195e9b326c7778c86070b764a3cbd"
     },
     {
       "name": "xdr/Stellar-contract.x",
@@ -1893,6 +1893,13 @@
       "source": "const SC_SPEC_DOC_LIMIT = 1024;",
       "file_index": 4
     },
+    {
+      "kind": "const",
+      "name": "SC_SPEC_TYPE_NAME_LIMIT",
+      "value": 256,
+      "source": "const SC_SPEC_TYPE_NAME_LIMIT = 256;",
+      "file_index": 4
+    },
     {
       "kind": "enum",
       "name": "SCSpecType",
@@ -2124,14 +2131,14 @@
       "kind": "struct",
       "name": "SCSpecTypeUDT",
       "fixed_size": null,
-      "source": "struct SCSpecTypeUDT\n{\n    string name<60>;\n};",
+      "source": "struct SCSpecTypeUDT\n{\n    string name<SC_SPEC_TYPE_NAME_LIMIT>;\n};",
       "file_index": 4,
       "fields": [
         {
           "name": "name",
           "type": {
             "kind": "string",
-            "max_size": 60
+            "max_size": 256
           }
         }
       ]
@@ -2358,7 +2365,7 @@
       "kind": "struct",
       "name": "SCSpecUDTStructV0",
       "fixed_size": null,
-      "source": "struct SCSpecUDTStructV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<60>;\n    SCSpecUDTStructFieldV0 fields<>;\n};",
+      "source": "struct SCSpecUDTStructV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<SC_SPEC_TYPE_NAME_LIMIT>;\n    SCSpecUDTStructFieldV0 fields<>;\n};",
       "file_index": 4,
       "fields": [
         {
@@ -2379,7 +2386,7 @@
           "name": "name",
           "type": {
             "kind": "string",
-            "max_size": 60
+            "max_size": 256
           }
         },
         {
@@ -2513,7 +2520,7 @@
       "kind": "struct",
       "name": "SCSpecUDTUnionV0",
       "fixed_size": null,
-      "source": "struct SCSpecUDTUnionV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<60>;\n    SCSpecUDTUnionCaseV0 cases<>;\n};",
+      "source": "struct SCSpecUDTUnionV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<SC_SPEC_TYPE_NAME_LIMIT>;\n    SCSpecUDTUnionCaseV0 cases<>;\n};",
       "file_index": 4,
       "fields": [
         {
@@ -2534,7 +2541,7 @@
           "name": "name",
           "type": {
             "kind": "string",
-            "max_size": 60
+            "max_size": 256
           }
         },
         {
@@ -2583,7 +2590,7 @@
       "kind": "struct",
       "name": "SCSpecUDTEnumV0",
       "fixed_size": null,
-      "source": "struct SCSpecUDTEnumV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<60>;\n    SCSpecUDTEnumCaseV0 cases<>;\n};",
+      "source": "struct SCSpecUDTEnumV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<SC_SPEC_TYPE_NAME_LIMIT>;\n    SCSpecUDTEnumCaseV0 cases<>;\n};",
       "file_index": 4,
       "fields": [
         {
@@ -2604,7 +2611,7 @@
           "name": "name",
           "type": {
             "kind": "string",
-            "max_size": 60
+            "max_size": 256
           }
         },
         {
@@ -2653,7 +2660,7 @@
       "kind": "struct",
       "name": "SCSpecUDTErrorEnumV0",
       "fixed_size": null,
-      "source": "struct SCSpecUDTErrorEnumV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<60>;\n    SCSpecUDTErrorEnumCaseV0 cases<>;\n};",
+      "source": "struct SCSpecUDTErrorEnumV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<SC_SPEC_TYPE_NAME_LIMIT>;\n    SCSpecUDTErrorEnumCaseV0 cases<>;\n};",
       "file_index": 4,
       "fields": [
         {
@@ -2674,7 +2681,7 @@
           "name": "name",
           "type": {
             "kind": "string",
-            "max_size": 60
+            "max_size": 256
           }
         },
         {
@@ -2842,7 +2849,7 @@
       "kind": "struct",
       "name": "SCSpecEventV0",
       "fixed_size": null,
-      "source": "struct SCSpecEventV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    SCSymbol name;\n    SCSymbol prefixTopics<2>;\n    SCSpecEventParamV0 params<>;\n    SCSpecEventDataFormat dataFormat;\n};",
+      "source": "struct SCSpecEventV0\n{\n    string doc<SC_SPEC_DOC_LIMIT>;\n    string lib<80>;\n    string name<SC_SPEC_TYPE_NAME_LIMIT>;\n    SCSymbol prefixTopics<2>;\n    SCSpecEventParamV0 params<>;\n    SCSpecEventDataFormat dataFormat;\n};",
       "file_index": 4,
       "fields": [
         {
@@ -2862,8 +2869,8 @@
         {
           "name": "name",
           "type": {
-            "kind": "ref",
-            "name": "SCSymbol"
+            "kind": "string",
+            "max_size": 256
           }
         },
         {
diff --git a/xdr-json/ScSpecEntry.json b/xdr-json/ScSpecEntry.json
index 488b6418..37ff3860 100644
--- a/xdr-json/ScSpecEntry.json
+++ b/xdr-json/ScSpecEntry.json
@@ -119,7 +119,7 @@
       }
     },
     "ScSpecEventV0": {
-      "description": "ScSpecEventV0 is an XDR Struct defined as:\n\n```text struct SCSpecEventV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; SCSymbol name; SCSymbol prefixTopics<2>; SCSpecEventParamV0 params<>; SCSpecEventDataFormat dataFormat; }; ```",
+      "description": "ScSpecEventV0 is an XDR Struct defined as:\n\n```text struct SCSpecEventV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSymbol prefixTopics<2>; SCSpecEventParamV0 params<>; SCSpecEventDataFormat dataFormat; }; ```",
       "type": "object",
       "required": [
         "data_format",
@@ -140,7 +140,7 @@
           "$ref": "#/definitions/StringM<80>"
         },
         "name": {
-          "$ref": "#/definitions/ScSymbol"
+          "$ref": "#/definitions/StringM<256>"
         },
         "params": {
           "type": "array",
@@ -391,14 +391,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -437,7 +437,7 @@
       }
     },
     "ScSpecUdtEnumV0": {
-      "description": "ScSpecUdtEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTEnumCaseV0 cases<>; }; ```",
+      "description": "ScSpecUdtEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTEnumCaseV0 cases<>; }; ```",
       "type": "object",
       "required": [
         "cases",
@@ -460,7 +460,7 @@
           "$ref": "#/definitions/StringM<80>"
         },
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -487,7 +487,7 @@
       }
     },
     "ScSpecUdtErrorEnumV0": {
-      "description": "ScSpecUdtErrorEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTErrorEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTErrorEnumCaseV0 cases<>; }; ```",
+      "description": "ScSpecUdtErrorEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTErrorEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTErrorEnumCaseV0 cases<>; }; ```",
       "type": "object",
       "required": [
         "cases",
@@ -510,7 +510,7 @@
           "$ref": "#/definitions/StringM<80>"
         },
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -535,7 +535,7 @@
       }
     },
     "ScSpecUdtStructV0": {
-      "description": "ScSpecUdtStructV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTStructV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTStructFieldV0 fields<>; }; ```",
+      "description": "ScSpecUdtStructV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTStructV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTStructFieldV0 fields<>; }; ```",
       "type": "object",
       "required": [
         "doc",
@@ -558,7 +558,7 @@
           "$ref": "#/definitions/StringM<80>"
         },
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -630,7 +630,7 @@
       }
     },
     "ScSpecUdtUnionV0": {
-      "description": "ScSpecUdtUnionV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTUnionV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTUnionCaseV0 cases<>; }; ```",
+      "description": "ScSpecUdtUnionV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTUnionV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTUnionCaseV0 cases<>; }; ```",
       "type": "object",
       "required": [
         "cases",
@@ -653,7 +653,7 @@
           "$ref": "#/definitions/StringM<80>"
         },
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -665,6 +665,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<30>": {
       "type": "string",
       "maxLength": 30
diff --git a/xdr-json/ScSpecEventParamV0.json b/xdr-json/ScSpecEventParamV0.json
index eb5ed50c..5fbd0347 100644
--- a/xdr-json/ScSpecEventParamV0.json
+++ b/xdr-json/ScSpecEventParamV0.json
@@ -217,14 +217,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -244,13 +244,13 @@
       "type": "string",
       "maxLength": 1024
     },
-    "StringM<30>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 30
+      "maxLength": 256
     },
-    "StringM<60>": {
+    "StringM<30>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 30
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecEventV0.json b/xdr-json/ScSpecEventV0.json
index 8b4c64ce..5c85f412 100644
--- a/xdr-json/ScSpecEventV0.json
+++ b/xdr-json/ScSpecEventV0.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2019-09/schema",
   "title": "ScSpecEventV0",
-  "description": "ScSpecEventV0 is an XDR Struct defined as:\n\n```text struct SCSpecEventV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; SCSymbol name; SCSymbol prefixTopics<2>; SCSpecEventParamV0 params<>; SCSpecEventDataFormat dataFormat; }; ```",
+  "description": "ScSpecEventV0 is an XDR Struct defined as:\n\n```text struct SCSpecEventV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSymbol prefixTopics<2>; SCSpecEventParamV0 params<>; SCSpecEventDataFormat dataFormat; }; ```",
   "type": "object",
   "required": [
     "data_format",
@@ -25,7 +25,7 @@
       "$ref": "#/definitions/StringM<80>"
     },
     "name": {
-      "$ref": "#/definitions/ScSymbol"
+      "$ref": "#/definitions/StringM<256>"
     },
     "params": {
       "type": "array",
@@ -266,14 +266,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -297,6 +297,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<30>": {
       "type": "string",
       "maxLength": 30
@@ -305,10 +309,6 @@
       "type": "string",
       "maxLength": 32
     },
-    "StringM<60>": {
-      "type": "string",
-      "maxLength": 60
-    },
     "StringM<80>": {
       "type": "string",
       "maxLength": 80
diff --git a/xdr-json/ScSpecFunctionInputV0.json b/xdr-json/ScSpecFunctionInputV0.json
index 1063ca41..ff6c8ac6 100644
--- a/xdr-json/ScSpecFunctionInputV0.json
+++ b/xdr-json/ScSpecFunctionInputV0.json
@@ -205,14 +205,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -232,13 +232,13 @@
       "type": "string",
       "maxLength": 1024
     },
-    "StringM<30>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 30
+      "maxLength": 256
     },
-    "StringM<60>": {
+    "StringM<30>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 30
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecFunctionV0.json b/xdr-json/ScSpecFunctionV0.json
index ea6fff62..10e23748 100644
--- a/xdr-json/ScSpecFunctionV0.json
+++ b/xdr-json/ScSpecFunctionV0.json
@@ -237,14 +237,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -268,6 +268,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<30>": {
       "type": "string",
       "maxLength": 30
@@ -275,10 +279,6 @@
     "StringM<32>": {
       "type": "string",
       "maxLength": 32
-    },
-    "StringM<60>": {
-      "type": "string",
-      "maxLength": 60
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeDef.json b/xdr-json/ScSpecTypeDef.json
index a0d492a5..3e9fc74a 100644
--- a/xdr-json/ScSpecTypeDef.json
+++ b/xdr-json/ScSpecTypeDef.json
@@ -293,14 +293,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -316,9 +316,9 @@
         }
       }
     },
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeMap.json b/xdr-json/ScSpecTypeMap.json
index 38f09bc7..b944069f 100644
--- a/xdr-json/ScSpecTypeMap.json
+++ b/xdr-json/ScSpecTypeMap.json
@@ -201,14 +201,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -224,9 +224,9 @@
         }
       }
     },
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeOption.json b/xdr-json/ScSpecTypeOption.json
index 74f48476..6e8e6cf2 100644
--- a/xdr-json/ScSpecTypeOption.json
+++ b/xdr-json/ScSpecTypeOption.json
@@ -197,14 +197,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -220,9 +220,9 @@
         }
       }
     },
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeResult.json b/xdr-json/ScSpecTypeResult.json
index 5360f226..d6d5fac7 100644
--- a/xdr-json/ScSpecTypeResult.json
+++ b/xdr-json/ScSpecTypeResult.json
@@ -201,14 +201,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -224,9 +224,9 @@
         }
       }
     },
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeTuple.json b/xdr-json/ScSpecTypeTuple.json
index 3912f671..eac24584 100644
--- a/xdr-json/ScSpecTypeTuple.json
+++ b/xdr-json/ScSpecTypeTuple.json
@@ -201,14 +201,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -224,9 +224,9 @@
         }
       }
     },
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeUdt.json b/xdr-json/ScSpecTypeUdt.json
index 6e47333d..a6cb637e 100644
--- a/xdr-json/ScSpecTypeUdt.json
+++ b/xdr-json/ScSpecTypeUdt.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2019-09/schema",
   "title": "ScSpecTypeUdt",
-  "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+  "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
   "type": "object",
   "required": [
     "name"
@@ -11,14 +11,14 @@
       "type": "string"
     },
     "name": {
-      "$ref": "#/definitions/StringM<60>"
+      "$ref": "#/definitions/StringM<256>"
     }
   },
   "unevaluatedProperties": false,
   "definitions": {
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecTypeVec.json b/xdr-json/ScSpecTypeVec.json
index abced42f..c0451f69 100644
--- a/xdr-json/ScSpecTypeVec.json
+++ b/xdr-json/ScSpecTypeVec.json
@@ -197,14 +197,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -220,9 +220,9 @@
         }
       }
     },
-    "StringM<60>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 256
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecUdtEnumV0.json b/xdr-json/ScSpecUdtEnumV0.json
index 538a0d5d..9648b81d 100644
--- a/xdr-json/ScSpecUdtEnumV0.json
+++ b/xdr-json/ScSpecUdtEnumV0.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2019-09/schema",
   "title": "ScSpecUdtEnumV0",
-  "description": "ScSpecUdtEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTEnumCaseV0 cases<>; }; ```",
+  "description": "ScSpecUdtEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTEnumCaseV0 cases<>; }; ```",
   "type": "object",
   "required": [
     "cases",
@@ -27,7 +27,7 @@
       "$ref": "#/definitions/StringM<80>"
     },
     "name": {
-      "$ref": "#/definitions/StringM<60>"
+      "$ref": "#/definitions/StringM<256>"
     }
   },
   "unevaluatedProperties": false,
@@ -58,6 +58,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<60>": {
       "type": "string",
       "maxLength": 60
diff --git a/xdr-json/ScSpecUdtErrorEnumV0.json b/xdr-json/ScSpecUdtErrorEnumV0.json
index 67b4f157..07315e7e 100644
--- a/xdr-json/ScSpecUdtErrorEnumV0.json
+++ b/xdr-json/ScSpecUdtErrorEnumV0.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2019-09/schema",
   "title": "ScSpecUdtErrorEnumV0",
-  "description": "ScSpecUdtErrorEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTErrorEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTErrorEnumCaseV0 cases<>; }; ```",
+  "description": "ScSpecUdtErrorEnumV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTErrorEnumV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTErrorEnumCaseV0 cases<>; }; ```",
   "type": "object",
   "required": [
     "cases",
@@ -27,7 +27,7 @@
       "$ref": "#/definitions/StringM<80>"
     },
     "name": {
-      "$ref": "#/definitions/StringM<60>"
+      "$ref": "#/definitions/StringM<256>"
     }
   },
   "unevaluatedProperties": false,
@@ -58,6 +58,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<60>": {
       "type": "string",
       "maxLength": 60
diff --git a/xdr-json/ScSpecUdtStructFieldV0.json b/xdr-json/ScSpecUdtStructFieldV0.json
index ef690b09..7c536bd6 100644
--- a/xdr-json/ScSpecUdtStructFieldV0.json
+++ b/xdr-json/ScSpecUdtStructFieldV0.json
@@ -205,14 +205,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -232,13 +232,13 @@
       "type": "string",
       "maxLength": 1024
     },
-    "StringM<30>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 30
+      "maxLength": 256
     },
-    "StringM<60>": {
+    "StringM<30>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 30
     }
   }
 }
\ No newline at end of file
diff --git a/xdr-json/ScSpecUdtStructV0.json b/xdr-json/ScSpecUdtStructV0.json
index 35db4da9..ffd99cab 100644
--- a/xdr-json/ScSpecUdtStructV0.json
+++ b/xdr-json/ScSpecUdtStructV0.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2019-09/schema",
   "title": "ScSpecUdtStructV0",
-  "description": "ScSpecUdtStructV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTStructV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTStructFieldV0 fields<>; }; ```",
+  "description": "ScSpecUdtStructV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTStructV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTStructFieldV0 fields<>; }; ```",
   "type": "object",
   "required": [
     "doc",
@@ -27,7 +27,7 @@
       "$ref": "#/definitions/StringM<80>"
     },
     "name": {
-      "$ref": "#/definitions/StringM<60>"
+      "$ref": "#/definitions/StringM<256>"
     }
   },
   "unevaluatedProperties": false,
@@ -213,14 +213,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -260,13 +260,13 @@
       "type": "string",
       "maxLength": 1024
     },
-    "StringM<30>": {
+    "StringM<256>": {
       "type": "string",
-      "maxLength": 30
+      "maxLength": 256
     },
-    "StringM<60>": {
+    "StringM<30>": {
       "type": "string",
-      "maxLength": 60
+      "maxLength": 30
     },
     "StringM<80>": {
       "type": "string",
diff --git a/xdr-json/ScSpecUdtUnionCaseTupleV0.json b/xdr-json/ScSpecUdtUnionCaseTupleV0.json
index 7f776df9..b94d6d8f 100644
--- a/xdr-json/ScSpecUdtUnionCaseTupleV0.json
+++ b/xdr-json/ScSpecUdtUnionCaseTupleV0.json
@@ -209,14 +209,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -236,6 +236,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<60>": {
       "type": "string",
       "maxLength": 60
diff --git a/xdr-json/ScSpecUdtUnionCaseV0.json b/xdr-json/ScSpecUdtUnionCaseV0.json
index 697fd4f6..c59a50f7 100644
--- a/xdr-json/ScSpecUdtUnionCaseV0.json
+++ b/xdr-json/ScSpecUdtUnionCaseV0.json
@@ -214,14 +214,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -281,6 +281,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<60>": {
       "type": "string",
       "maxLength": 60
diff --git a/xdr-json/ScSpecUdtUnionV0.json b/xdr-json/ScSpecUdtUnionV0.json
index 74d90ee6..8700bac7 100644
--- a/xdr-json/ScSpecUdtUnionV0.json
+++ b/xdr-json/ScSpecUdtUnionV0.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2019-09/schema",
   "title": "ScSpecUdtUnionV0",
-  "description": "ScSpecUdtUnionV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTUnionV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<60>; SCSpecUDTUnionCaseV0 cases<>; }; ```",
+  "description": "ScSpecUdtUnionV0 is an XDR Struct defined as:\n\n```text struct SCSpecUDTUnionV0 { string doc<SC_SPEC_DOC_LIMIT>; string lib<80>; string name<SC_SPEC_TYPE_NAME_LIMIT>; SCSpecUDTUnionCaseV0 cases<>; }; ```",
   "type": "object",
   "required": [
     "cases",
@@ -27,7 +27,7 @@
       "$ref": "#/definitions/StringM<80>"
     },
     "name": {
-      "$ref": "#/definitions/StringM<60>"
+      "$ref": "#/definitions/StringM<256>"
     }
   },
   "unevaluatedProperties": false,
@@ -213,14 +213,14 @@
       }
     },
     "ScSpecTypeUdt": {
-      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<60>; }; ```",
+      "description": "ScSpecTypeUdt is an XDR Struct defined as:\n\n```text struct SCSpecTypeUDT { string name<SC_SPEC_TYPE_NAME_LIMIT>; }; ```",
       "type": "object",
       "required": [
         "name"
       ],
       "properties": {
         "name": {
-          "$ref": "#/definitions/StringM<60>"
+          "$ref": "#/definitions/StringM<256>"
         }
       }
     },
@@ -307,6 +307,10 @@
       "type": "string",
       "maxLength": 1024
     },
+    "StringM<256>": {
+      "type": "string",
+      "maxLength": 256
+    },
     "StringM<60>": {
       "type": "string",
       "maxLength": 60
diff --git a/xdr-version b/xdr-version
index 0b697893..aff7f3cf 100644
--- a/xdr-version
+++ b/xdr-version
@@ -1 +1 @@
-9c9c145953e80990d6ff1ae3a6a973a0ce6d0694
\ No newline at end of file
+46ed9010e912c2b29d45a5fa4182ebcbd80d2050
\ No newline at end of file