The -32500 error code is returned when the user operation is rejected when the EntryPoint is validating the user operation or creating the account. If you receive this error, check the initCode (if creating an account) and the signature in the user operation.

Accompanying codes from the EntryPoint

The -32500 error code may be accompanied by an additional AAxx code provided by the EntryPoint to give additional guidance.

Jump to the AAxx EntryPoint error code guide.