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Patch polymorphic lookup Canvas App to Dynamics CE

I have made a Canvas App linked via CDS to Dynamics 365 CE. Saving a photo from the app to the annotation table in Dynamics is working fine.

Now I would like to link this annotation record to an existing contact, which I have selected in the app using the field objectid in a patch command (I have a GUID, a contact name and an entity name). This objectid is a polymorphic lookup field, but I can't figure out how this objectid should be filled. Any help would be appreciated

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Microsoft
Microsoft

Re: Patch polymorphic lookup Canvas App to Dynamics CE

Hi marcvdw

 

Please check this url:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/working-with-references

 

I hope it help you.

 

Regards.

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