I have integrated CRM Online with SharePoint on-premise using Server-based integration. When I go to "Documents" area of a record, I get this error:
According to this post: https://technet.microsoft.com/en-us/library/dn946906.aspx, it says that "This error can be returned to the user who doesn’t have site permissions or the user has had permissions removed from the SharePoint site where Microsoft Dynamics CRM document management is enabled". But my user has Sys Admin role in CRM and can access the SharePoint site normally.
Please advise!
UPDATE: Turns out it is because of the load balancer. It always root requests too one server and the busy traffic causes CRM cannot connect to SharePoint in time.