diff --git a/clients/js/src/generated/errors/mplCore.ts b/clients/js/src/generated/errors/mplCore.ts
index a0d497db..6befb4d4 100644
--- a/clients/js/src/generated/errors/mplCore.ts
+++ b/clients/js/src/generated/errors/mplCore.ts
@@ -291,6 +291,19 @@ export class MissingUpdateAuthorityError extends ProgramError {
 codeToErrorMap.set(0x14, MissingUpdateAuthorityError);
 nameToErrorMap.set('MissingUpdateAuthority', MissingUpdateAuthorityError);
 
+/** MissingNewOwner: Missing new owner */
+export class MissingNewOwnerError extends ProgramError {
+  override readonly name: string = 'MissingNewOwner';
+
+  readonly code: number = 0x15; // 21
+
+  constructor(program: Program, cause?: Error) {
+    super('Missing new owner', program, cause);
+  }
+}
+codeToErrorMap.set(0x15, MissingNewOwnerError);
+nameToErrorMap.set('MissingNewOwner', MissingNewOwnerError);
+
 /**
  * Attempts to resolve a custom program error from the provided error code.
  * @category Errors
diff --git a/clients/rust/src/generated/errors/mpl_core.rs b/clients/rust/src/generated/errors/mpl_core.rs
index e65b56e4..83a89a41 100644
--- a/clients/rust/src/generated/errors/mpl_core.rs
+++ b/clients/rust/src/generated/errors/mpl_core.rs
@@ -73,6 +73,9 @@ pub enum MplCoreError {
     /// 20 (0x14) - Missing update authority
     #[error("Missing update authority")]
     MissingUpdateAuthority,
+    /// 21 (0x15) - Missing new owner
+    #[error("Missing new owner")]
+    MissingNewOwner,
 }
 
 impl solana_program::program_error::PrintProgramError for MplCoreError {
diff --git a/idls/mpl_core.json b/idls/mpl_core.json
index aceaabab..ac21832b 100644
--- a/idls/mpl_core.json
+++ b/idls/mpl_core.json
@@ -2270,6 +2270,11 @@
       "code": 20,
       "name": "MissingUpdateAuthority",
       "msg": "Missing update authority"
+    },
+    {
+      "code": 21,
+      "name": "MissingNewOwner",
+      "msg": "Missing new owner"
     }
   ],
   "metadata": {