I have an external content list - for my purposes, the data isn't any fancier than a list of terms provided by a web service (read only - I don't need update/delete functionality). I want to be able to link any subset of those terms to a single document
metadata column (in other words, I need it to work like a normal content list that is defined to allow multiple values in a column) but SharePoint doesn't let me do that on an ECL. I need the content list to be externally driven since more values are going
to be added to an outside system over time, but I think it's possible that I may not need a full-fledged ECL list to make this work this way in SharePoint.
Just to clarify: I don't need the metadata values in my documents to maintain a PERSISTENT link to the web service (if someone changes an underlying value in the web service DB, it doesn't need to be updated in the document table too). I just want SharePoint
to offer up an updated set of source values from the web service if somebody goes in and edits the document metadata.
Any ideas for how I can make this work?
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