I have a Powerapp which links to two Common Data Service (Dataverse) tables (Items and Item Categories) which are virtual entities which come from Business Central.
The virtual entities were configured as per this link...
https://community.dynamics.com/business/b/andreysnavblog/posts/expose-business-central-api-as-cds-virtual-entity-without-code
The app works perfectly fine for myself but when I share this with others and they open the app they get this error...
"The requested operation is invalid. Server Response: Item Categories failed: The server has rejected the client credentials."

The user has the required CRUD permissions to the custom entities.
Any ideas what could be causing this issue?
Thanks in advance.