Business area in BAPI 'BAPI_GOODSMVT_CREATE'

Hi!

I'm using BAPI 'BAPI_GOODSMVT_CREATE' to do a Goods issue (transaction MB1A) and I need to know where can I find the Busines Area which is required in this transaction.

This field is not available in table with item data. Does anybody have any idea?

Thanks in advance!

Juan