+2I have a nintex form which interacts with a SharePoint Online list - all working fine until today, when the one form (for only 2 records) started giving several users a "Under does not Exist or is not Unique" error when the item is being submitted (please note that this is an existing item which is being edited and updated, not a new item being submitted.
Has anyone any idea why this is happening, and also what the fix is?
I had this problem today. On my form I have a people field on my form, which is restricted to a certain SharePoint group. The person who was selected in this field was removed from the group, which resulted in the error. Once I added the person back into the group or updated the person in the field to someone who is in the group, the problem was resolved.
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