PI partner not fetching from Vendor master while creating PO

Hi Experts,

Initially it seemed very simple issue when user confirmed me sometimes at the time of creating PO ,the PI partner role from Vendor master is not automatically populating in the PO.

I tested and the same did not happen to me.The user facing sometimes this issue not always.But the reason is unknown.

I checked the vendor master and the PI partner vendor is very much included in the vendor master data.Though while creating PO,system only PI partner data is not pulling...I checked whether the PI partner data is created for that company code or not.

Sometimes its created sometimes not...But in both the cases its happening...

Not getting any clue..

Regards

Zeenat Rehana