Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Log supplier agreement values and dates from shared files.
Your team gets a linked tracker row and a contract summary to check when someone shares a readable contract file in chat.
List missing supplier contract files on the original approval request.
Your requester sees exactly which contract files are missing, while the approval stays in correction for follow-up.