SharePoint Online : Update External List Forbidden from 2013 Workflow although working with Fiddler.


  • Hi,

    I am designing a 2013 Workflow with SPD for SharePoint Online (Off365) to update a column in an external List.

    I have tested the REST endpoint with Fiddler and it is working nicely (quite an achievemnt btw).

    But when I try to do exactly the same operation from a 2013 Workflow, I keep on getting the "Forbidden" error code and the "You do not have permission to perform this action or access this resource" error message.

    If a redirect the call in my workflow to a normal List (not external), it is working great, so the issue is specific to External lists.

    I suspect it could be related to permissions on BCS and / or the External Content Type ?

    Unfortunately, in SharePoint Online I have no way off adding authorized members of BCS other than people in AD.

    Can someone help me?

    Wednesday, March 8, 2017 11:40 AM

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