SAP intends the ABC Indicator field to indicate importance of an object to production operations. SAP definition is shown below. It can be found on the 'Location' tab for both Functional Locations and Equipments. SAP guru may be able to use this information in a user exit to achieve the result you are seeking.
Definition: ABC indicator
Cross-Application Components (CA)
Indicator that is assigned by the procedure of ABC analysis.
The following three ABC indicators are possible:
A: important
B: less important
C: relatively unimportant
According to these criteria, "A" materials are those materials that are of greatest importance for the production operations of a company.
Examples of use for ABC indicators are vendor master records, material master records, and master records of technical objects.