Depending up on TOR PGI takes place let me explain how it takes place when a requirement comes this has been transferred to MRP through TOR. Depending up on the availability of the material transfer of order takes place in which the requirement sits in the storage location from there picking and packing process takes place and finally PGI activity takes place. In general, IN GENERAL TERMENOLOGY TOR IS THE ACTIVITY WHICH TAKES PLACE BEFORE CREATING A DELIVERY DOCUMENT AND PGI PROCESS TAKES PLACE AFTER CREATING A DELIVERY DOCUMENT.