Copilot Agent inside SharePoint site is not able to answer questions regarding the custom columns

1. Check permissions
Make sure your account has read permissions to SharePoint content.
Path: SharePoint Site → Settings → Site Permissions → Check your account permissions.
2. Wait for content to be indexed
Newly uploaded documents may take 24-48 hours to be retrieved by the system.
You can speed it up manually: go to Document Library → Settings → Advanced Settings → Make sure ‘Allow Web Crawling’ is turned on.
3. Verify the file format
Copilot currently supports:
Office files (Word/Excel/PPT)
Standard PDF (not scanned) is not supported:
Images, scanned PDFs (need to be converted with an OCR tool first)
4. Confirm that Copilot is enabled
Contact your company IT administrator to check:
Whether a Copilot licence is assigned
Whether Copilot for SharePoint is activated or not