Consolidation of SD Billing Accounting entries

Dear All,

I have defined a condition type ZP00 as header condition.and assigned an accounting key to it.While creating the bill i am generating the following accounting entries

Customer 1000 Dr.

Work reciept 200 Cr.

Work reciept 200 Cr.

Work reciept 200 Cr.

Work reciept 400 Cr.

But i want the accounting entries to be as follows:-

Customer 1000 Dr.

Work reciept 1000 Cr.

Regards

Praveen Dhankar