You can create a sourcelist in ME05 transaction. A source list is a list of possible sources for a material. If a source list requirement exists for the material, you must create a source list to proceed with the ordering.

  1. Execute t-code ME05.
  2. Enter material, or material list/range.
  3. Enter plant.
  4. Untick the test run check box to perform the transaction instead of using the test mode.
  5. Execute the transaction.

How to Create a Source List Determination: SAP ME05

On the results screen select the appropriate line item and click on the save button. You have created a source list.