Customer statements for credit balances (F.27)

Question

We need to be able to run "Periodic Account Statements in SAP, transaction F.27, for customers that have a credit balance.
For clarity, this is a balance that is less than ZERO, for example if a customer has an outstanding credit item on their account that exceeds any debit amount, eg: invoice for $100, payment for $150, net CREDIT balance of ($50)
In accordance with direction from our auditors, we need to be able to print and send these statements, as we do with the present process of sending monthly statements to customers that have a debit balance, and send them to customers. I'd be really surprised if this functionality is not built into SAP.
My Question is: Can this change be made using a built-in functionality in SAP like make config changes in SAP IMG or would this need to be programmed? If it can be done in SAP by making config changes please post the steps. Thanks.

Answer 1

SOLUTION:
When you run the transaction F.27 you specify a Company code and a Correspondence type. The correspondence type has a print program and a variant associated to it through SAP IMG (config). During its run F.27 calls the program + variant dynamically. The variant controls the selection screen of that print program. One of the fields on that selection screens is "Balance in local currency". The value for that field was set to greater than zero (Balance in local currency > 0). This is why F.27 was skipping any Customer Statements which had a balance less than zero (i.e. credit balance).
You can check the program name and variant associated with a correspondence type by following this path in SAP IMG:
SPRO > SAP Reference IMG > SAP Customizing Implementation Guide > Financial Accounting > Financial Accounting Global Settings > Correspondence > Assign programs for Correspondence Types
and you can modify the variant by using transaction SE38.