Hi Ranjeet,
In Vendor master, you have the option of maintaining Pmt term in two places
1. Company code data view
2. Purchasing Organization view
When you maintain in Company code view, it is applicable for all postings made from FI like FB60 etc..meaning that when you post an invoice from FB60, then, the pmt term maintained in co. code view will flow to the document and not the one that you maintain in Purchasing organization view.
Similarly, what you maintain in Purchasing organization view, will flow to all documents posted from MM module. That means in IR, the pmt term that you maintain in purchasing org view will flow.
Hope this clarifies the doubt.
Regards,
Kavita