Did you install a licenced version for every branch or just copy the database?
If so, 4POS will not allow you any upgrades in future as it will pick up the same 4POS licence on all pc's! (Piracy)
If not, you should have register the systems as ABC shoe stores (B001), (B002) etc
The only way to fix it now will be :
1. Verify the 4POS licences
2. Relicence the software with the new name (Costs R500 per branch as we have to log in & re-register)