# 50514: Conflicting message modification

Log Type: APPLICATION

Log Level: ERROR

## Description

The requested message is already being modified in this service instance concurrently with another API request. The last request will be rejected to avoid inconsistent state.

### Possible causes

* You might be submitting multiple concurrent requests to modify a message or its attributes with the same SID in the service instance.

### Possible solutions

* Implement an operation retrier and repeat the failed API requests after an interval of time, using an exponential backoff algorithm.
* Review your application logic that caused the race condition when modifying a message. Perhaps the conflicting operations are happening in a loop that could be avoided.
* Serialize your API requests that modify conversation messages. Wait until the original request completes and returns an API response, before sending any successive conversation requests.