Posting Document Currency and the Functional Currency using BAPI function

Hi All,

I am using one BAPI function module ( BAPI_ACC_GL_POSTING_POST) to post FI GL entries. As per the existing business requirement, my program transferring only document currency and creating FI document as per the current exchange rate.

In new requirement, I need to pass both document currency and functional currency.

As per the existing BAPI function, I can pass only derived exchange rate along with document currency. This solution is not acceptable as per the client.

I need to know, is there any BAPI function module with similar functionality, so that I can pass both currency amount.

Appreciate your expert comments.

Thanks & regards

Sujith