SOLUTION:

1. Open InforOS - M3 KMN from your Web Browser.

2. From the M3 Menu type PPS180 for Purchase Requisition.Open.

3. Click the ACTIONS from the Purchase Requisition.Open window and then select Settings.

4. In the Settings window go to the Opening panel field and select A-Entry.

5. Once you are in the A-Entry panel, you can then now change Warehouse and complete the purchase requistion.