Condition Tab in STO PO(without delivery) not generating

Hi Experts..

I am raising a STO(UB doc type) with T.Code Me21n...

Putting supplying Plant in the header and receiving plant in Item level with material details.

Unless we are putting Pur Org,Pur grp,company code ...TAB CONDITIONS is coming in the item level..But once we are putting Pur Org ,Pur Grp and Company code in Org Data(Header) ...CONDITION TAB is vanished from the item level...

We are trying to do stock transfer with STO without delivery...Issuing plant will do GI with mvt type 351(system will take this automatically ) and then again Receiving plant will do GR for taking the material from STOCK IN TRANSIT to their Unrestricted use stock..

Unable to find out where is the issue ...Why condition tab is not coming in the STO.

Please suggest..

Regards

Zeenat