Customer ID auto numbering per subsidiary

Hi Experts,

Recently we configured an additional Subsidiary in our system. The issue I am having is that, the number of customers for the second (new) subsidiary is less than the first subsidiary & also we needed to have separate credit terms & credit limits in case both subsidiaries have a common customer.

We decided to import customers only specific to second subsidiary & assign credit terms & credit limits & use a different prefix for customers for the second subsidary.

The issue now we are facing is that, whenever we key in a new customer only for the second subsidiary, it follows the auto numbering as well as the prefix for the first subsidiary instead of the second subsidiary even if the right subsidiary is selected during input. We can always do a CSV import but then we have to keep checking the last customer ID & manually input everything in the CSV & then import which is tedious if you have to enter only one customer which is much faster by direct input.