what to do when Getting error code `ErrorIrresolvableConflict` responses when trying to create events on a calendar using Outlook REST API

How can I resolve the error code ErrorIrresolvableConflict when trying to create events on a calendar using the Outlook REST API?

To resolve the ErrorIrresolvableConflict when trying to create events on a calendar using the Outlook REST API, you can try the following steps:

Check Change Key: Ensure that the change key passed in the request matches the current change key for the item. The error often occurs when there is a mismatch between these keys1.

Retry the Operation: Sometimes, simply retrying the operation can resolve the conflict, especially if it was a temporary issue.

Update the Item: Before creating a new event, update the existing item to ensure it has the latest change key.

Add Delays: Introduce a small delay (e.g., 100 milliseconds) between API calls to avoid conflicts due to rapid successive requests.

Review API Documentation: Refer to the Outlook REST API documentation for any specific guidelines or best practices related to handling conflicts.

By following these steps, you should be able to resolve the ErrorIrresolvableConflict and successfully create events on the calendar using the Outlook REST API. If the issue persists, you may need to consult additional resources or seek help from Microsoft support.