AhsayCBS / AhsayOBM / AhsayACB: 188.8.131.52 or above
When performing an Office 365 restore of items to SharePoint, the following warning message is received in the restore report:
Fail to create Item "User (/personal/directory/Lists/List/x_.000)", Reason = "List data validation failed. 500
Internal Server Error"
This warning message is returned by Office 365, indicating that the restore item(s) violated the SharePoint list data validation controls configured on the restore location.
To resolve this issue, please review the SharePoint list data validation controls on the Office 365 domain.
Refer to the following Microsoft document for details:
office 365, SharePoint, 500 internal server error, list validation, list control