Validation for SharePoint 2010 external lists / external content types
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        Published on 2010-05-03T19:51:15Z
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            2010/06/10
            12:42 UTC
        
        
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sharepoint2010
|BCS
Where does one put validation for external content types? Let's say one field on my ECT represents an email address that must be unique in our system. Where would I put the validation that checks to see that someone hasn't submitted an instance of the ECT with a duplicate email address? How do I bubble up validation errors so they're displayed in the SharePoint UI?
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