BAPI_ACC_DOCUMENT_POST and BAPI_TRANSACTION_ROLLBACK

Hi All,

I'm using BAPI: BAPI_ACC_DOCUMENT_POST to post the cross company document to others system.

I tried test the BAPI with test run mode without commit it. The BAPI able to return the document number posted (eg:5000001).

When I perform the second time test run again to this BAPI, the document no. get increased even earlier steps I did not commit it. I also have using the BAPI_Transaction_Rollback, however, the document no. still get increasing. Could anyone advise on this is there any reason the number keep increase even ? Thank you.