Forum Discussion

Iron Contributor

Sep 19, 2017

Is this a bug? Look up column to External List error - SP2016

Hello folks - I am trying to find out if this is a bug with the product, or an issue with my farm. So, I wanted to reach out to the community to get help on something tested. (SharePoint 2016) Pl...

SharePoint Server 2016

Trevor Seward

MVP

Sep 21, 2017

What error are you seeing (in ULS logs if applicable)?

Ali Salih
Iron Contributor
Sep 21, 2017
"Object reference not set to an instance of an object" - What I see. Nothing helpful, as always.
- Trevor Seward
  MVP
  Sep 21, 2017
  You should have a complete stack trace with that. Would be happy to t-shoot it but it'll take me some time to replicate the whole BCS/ECT/etc stuff.
  
  I know that External Lists themselves cannot have Lookup columns, though I'm unsure about a normal List using a lookup to an EL.
  - Ali Salih
    Iron Contributor
    Sep 21, 2017
    Yes, it does have stack trace but it is not immediately useful either. I will post it later on today. If you've a lab, just testing the scenario would be fast, and I appreciate it if you do. Like I said two completely different farms shown this behavior, so I am hesitant to say something is 'broken' with the farms, but may be something undocumented going on.