Mapping FILE-RFC

Hi everyone.

I've made an XML.

My message type is

field: bukrs 1..unbounded.

The file will contain N company codes.

On the other side, i have a BAPI. This bapi contains, as tables, to fields : company and error.

i want to make the mapping between the XML file and the internal table of the BAPI called company (defined in tables).

How do i have to make the mapping?

Thanks