Field help (BPRSACSIH) 

This is the call code for the customer collective account for the bill-to customer. This information can be modified.
From this field, it is possible to directly enter a collective account code whose existence is controlled in the corresponding table or to use the contextual button to select a collective code among those available.

The initialization of the code for the Control field depends on whether or not the BP/Company tab is present in the BP record (GESBPR).