Setup to exclude open receivable of a specific IO from credit limit checking

Hello,

My client has one (1) operating unit and two (2) inventory units, lets say inventory unit A and B.

Both inventory units A and B are selling different products to the same customer.

The customer profile is configured for 'Credit Check' and the 'Credit Limit' is set.

However, my client wants the 'credit check' to consider only the open receivable from IO B only.

Example:

-Credit Limit= 5000

-Open receivable (invoice) from A = 2000

-Open receivable (invoice) from B = 4000

New order for this customer can not be processed since the total open receivable is 6000 (which exceeds the 'credit limit')

Our client wants to consider ONLY the open receivable from B which is 4000.