AA24 signature error

AA24 signature error is an ERC-4337 EntryPoint error that means the smart account's validateUserOp function rejected the user operation's signature.

The validateUserOp function of the smart account rejected the signature of the user operation.

Possible solutions

• Verify that the user operation was correctly signed, and that the signature was correctly encoded in the signature field of the user operation.
  • Most smart account implementations sign over the userOpHash. Make sure that the userOpHash is correctly computed. Consider leveraging functions like getUserOperationHash from viem/account-abstraction.
  • Make sure you have selected the correct chainId and entryPointAddress when computing the userOpHash.
  • Make sure the smart account signature verification function is correctly implemented.
• If all else fails, investigate why the validateUserOp function rejected the user operation signature using tools like Tenderly.