Hi there
Thanks for using QandA Playform
Thanks for the update, Paris Perlegkas
Yes, for anyone facing the same issue: if you're getting an error when selecting your Azure AI Search index in the Chat playground, make sure the Foundry AI Hub and Project’s Managed Identities have at least the "Reader" role on the Search service. Without proper permissions, the index can't be accessed during setup.
Great catch, and glad you resolved it!
Since you cant accept your answer I'm posting it here as a separate thread, please do mark it accepted as it helps people who face similar issue thanks much.