Purchase Account Posting System.

Dear All,

I have selected Use Purchase Account Posting System.

I have maintained three different Purchase GL Account code based on Supplier category like CST Supplier, VAT Supplier. Now i want to Post the particular Purchase Entry to the Concerned Supplier category Purchase Account

eg: CST Supplier Purchase GL Code : 5010001

VAT Supplier Purchase GL Code : 5010002

Please help me how to configure this problem in SAP B1.

Thanks in advance.

-Rajesh