SharePoint Online Deletion Code Lock

Our SharePoint Online sites need a safeguard that blocks anyone from deleting a document or folder unless they first enter a dedicated “code set.”

Key points to emphasize:
• A simple, easy-to-maintain solution for preventing accidental deletions using a fixed code.
• The first prompt for deletion asks for the fixed code.
• Any authorized user, not just administrators, can use their specific code when genuinely needing to remove content.
• All other daily tasks (upload, move, copy, edit, versioning) remain unaffected.

I am open to simple technical solutions best suited for SharePoint Online—such as Power Automate or custom permissions—so long as it is cleanly implemented and keeps Microsoft supportability intact.

Deliverables I’ll need handed over:
• Configured solution running in our test site collection and then promoted to production
• Basic step-by-step documentation showing how users generate and input this fixed code, along with its maintenance procedure.
• A demo call proving that a delete fails without the fixed code and succeeds with it; this action should also be logged for audit

This solution must be implemented over TeamViewer.