Ordering party has to be a company

Hi All,

I have the following error when i post PO from R/3 to SUS.

An error occured within an XI interface: Exception occurredA:BBP_BUPA:263 -Ordering party has to be a company Programm: CX_BBP_BD_ERROR===============CP; Include: CX_BBP_BD_ERROR===============CM002; Line: 57

But intrestingly when i reprocess it SXMB_MONI in SUS system with out changing anything it gets posted...and PO gets created in SUS.

Can any one tell us what could be the reason.

Thanks

Jagan