1 Vendor but Many Company Codes
We have an intercompany vendor that is obviously shared by many companies but the issue is that everytime 1 vendor makes a change to the master record, all companies are effected by it. Is there a tcode that restricts changes to a master record to only the company actually making the change? The issue revolves around the "Payment transactions" tab. Is there any harm in adding all the bank accounts that any one company has with that vendor in the spaces provided?
If you are asking about the payment transactions view in the general area, then regrettably, there would be no standard control. You can however use a field or user exit to take care of it.
Usually, there are centralised treasuries in large corporations and the maintenance of this view is giving to a central location.
There is no harm in maintaining all vendor bank data here. There are clear rules which can be set up for determining specific accounts for specific company codes.