How to set as NO entered the accounting combinations field for purchasing and inventory module?

Summary:

Our customer is requesting a way to prevent the manual updates on any transacion from Inventory and PO module, Have you done any solution that can help to achive this requirement by standard or custom.

Currently the Inventory (The Misselaneous transactions enables the field, We are trying with the aliases but also we are able to udpate the segments values) Would you please help with a guide on what we can suggest to our customer

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