A professional diagramming tool that helps users visualize complex information through easy-to-understand diagrams.
Dear Bria Carson,
Good day! Thank you for posting your query in our community.
Based on your description, you encountered problem when creating an org chart in Visio.
About the error message, I researched a lot, and found two threads which have the similar error with you, you can try the suggestions in these two threads to see the result:
Org Chart by department -- employee can be the head of multiple departments (microsoft.com)
Eliminating Duplicates prior to Creating Org Chart - Microsoft Community
Sincerely,
Jazlyn | Microsoft Community Moderator