Managing Sales and Purchases Orders (Advanced Features Request/Suggestion)

May I know whether there is any remarking system for used up quotes/ orders so that same quote or order cannot be used more than one time. This is a request from a potential client for Manager and applicable for both inventory and non-inventory?

no. and in my opinion it is not a feature to look forward to.
most business do not fulfill a sales order in a single invoice.
also, there are contractual obligations where a company quotes rates for their products which is valid for any number of supplies over a period of time.

Thank you.