While working in Copilot studio and connecting with sharepoint, we are not getting proper answer , its like we are getting answers immediately but after an hour or so , no answers are available, the same issue is in teams, at a point we are getting answers and beyond that after some time even if a topic is configured the answers are not coming to the way it should have been.
Copilot Studio Generative answers use SharePoint search Index. If the files are uploaded to SharePoint, you need to wait until files are indexed and available for the Graph API search. SharePoint indexes files continuously but based on the search configuration on tenant.
Here are the trouble shooting steps from Microsoft you can explore using Graph explorer.
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