400 INVALID_OTP_FORMAT - OTP format is invalid (must be 4 digits)400 OTP_EXPIRED - OTP has expired. Please initiate a new operation.400 OTP_MAX_ATTEMPTS_REACHED - Maximum OTP verification attempts reached. Please initiate a new operation.400 OTP_VERIFICATION_FAILED - OTP verification failed (generic error)400 OTP_INCORRECT - Invalid OTP provided. Please try again.404 CARD_ISSUANCE_NOT_FOUND - The card issuance cannot be found404 OTP_OPERATION_NOT_FOUND - OTP operation context is missing or not found409 CARD_STATUS_NOT_ALLOWED - Card issuance state transition is not allowed412 OTP_OPERATION_WRONG_STATUS - OTP operation is not in correct state (already completed or failed)503 SERVICE_UNAVAILABLE - The service is currently unavailable. Please try again later.