Calling Transaction VA02 from USEREXIT_SAVE_DOCUMENT
I am calling Custom Transaction in USEREXIT_SAVE_DOCUMENT for cash payment process. In this screen I do have one button called "RETURN TO ORDER", is press this button Should call the Transaction VA02. It's calling transaction VA02 & also Populating SALESORDER number ,but when i press enter it's giving error as <b>" SALES ORDER NUMBER IS NOT AVAILABLE IN DATABASE"</b>.
Any ideas how can i overcome this? Is there is any BAPI's i should use? Please give me your Good ideas & Guidance?