Restricting specific value in a filed.
Please look into the below scenario and suggest an appropriate procedure.
Suppose WERKS field consists of values viz AA01, AA02,BA01,BA02,CA01,CA03.....etc.
If we put * [Star] in WERKS field User will get authorization for all Plants. But we want to restrict User with the authority of a specific plant for example, we dont want to authorize him for Plant BA02.
Is there any method we can restrict him for this specific value and give authority for all plant values except BA02.