# 90403: \[Autopilot] Signature validation failed

Log Type: APPLICATION

Log Level: ERROR

## Description

Signature validation is failed.

### Possible causes

The account owns the messaging/voice service does not have any parent/sub-account relationship with the account owns the Autopilot assistant.

### Possible solutions

Moving the assistant (export and import) into the service account or service account's one of the sub-accounts would solve the problem.