I have one problem in my SAP system. Eventhough i maintained everything in IMG customization relevent settings to create PR or PO and Org str well defined with comany, plant etc, assignments of org str well done, while creating PR or PO, system throughs error message "Please enter plant". Eventhough i manually enter the plant number in PR or PO, again i get the same error. The error message number is ME 083. Please guide me how to overcome this error?