AA24 Signature Error

The signature is invalid

The signature of the user operation is invalid, and may be in an incompatible format.


  • The user operation hash is correct
    • The user operation data matches the final user operation that is sent to the bundler client
    • The Entry Point address is correct
    • The Chain ID is correct
  • The smart contract of the account expects the same type of signature (e.g., keccak256)


Learn more about signing user operations

Get the user operation hash