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How to lock the Structure/Tab?

Motivation / Problem

How to restrict changes to a tab in a project ?
Add/remove assignements or change sequence?

The lock button is always availbale, you do not get an info that you have no authorization when you press it

Approach / Solution

Maintain C_SIGN like this.


Now you can lock/unlock a tab

Additional Information

It is no possible to restrict to a special tab type like transaction
You can only restrict the access to a tab type by authorization object AI_SA_TAB.
Each lock can be combined with a signature strategy, there for authorization object C_SIGN_BGR is necessary.