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.
Name missing supplier contract files for the requester to provide.
Your requester sees exactly which contract files are missing, while the approval stays in correction for follow-up.
Check product quotes for unresolved internal objections before sending.
Your sender can see whether a quote has cleared internal review before it goes to a customer. Missing sign-off stays on the document for follow-up.