How to pass XREF1_HD field in standard FMs BAPI_INCOMINGINVOICE_CREATE and BAPI INVOICE CHANGE

Hi,

We have recently added XREF1_HD field in FB01 screen by implementing a BADI. Can someone suggest how XREF1_HD field can be passed  in BAPI_INCOMINGINVOICE_CREATE and  BAPI INVOICE CHANGE? I do not see any parameter for XREF1_HD in these two RFCs.

Thanks,

Pavan