I am attempting to create a relationship between two tables. The trouble is, I have a relationship that should be 1 to 1. In the SharePoint site from which both tables are pulled, each list is set to "force unique values" on the Leader ID and Employee Name ID fields. So, there should never be a "Many" scenario.
However, when I try to set the relationship to 1 to 1, I get the following error.
I even attempted to set the "many" side of this to "remove duplicates (despite the fact that SharePoint should not be allowing duplicates).
What am I missing? Why would this not be allowed? Thanks so much for your help!