Error when trying to add my Azure AI Search index as my data in Azure AI Foundry project's Chat playground

Paris Perlegkas 55 Reputation points
2025-06-03T20:59:28.8966667+00:00

I am trying to add my indexed data (rag-athenaeum-dev-index-02) as data for my 'Chat playground' RAG chatbot, but I get attached image's error as soon as I select my index.

Any help is highly appreciated - thanks!

chat_playground_index_data_error

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  1. Azar 29,520 Reputation points MVP Volunteer Moderator
    2025-06-04T10:29:02.2566667+00:00

    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.

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  1. Paris Perlegkas 55 Reputation points
    2025-06-03T21:06:17.1433333+00:00

    I had to assign the 'Reader' role to Azure Foundry AI hub and project Managed Identity members of my resource.

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