I was creating a po in me21n with reference to a rfq. The rfq can be properly adopted. When I am hitting save, one erroe is showing that " Source not included in list despite source list requirement ". Ihave cheked the corresponding source list in me01 with the respective vendor and material. An entry for the specific vendor and material that I am using in po do exist in source list. I created the rfq with reference to a Preq. Now how to solve?