job type in P43060 - W43060A

Hi All,

What is the function of job type in P43060-W43060A?

I try to use this field as marker (which purchase order is for internal use only and which purchase order is for supplier).

When I click save it gives me error :

- Invalid Job Type

         Cause... The Job Type is not valid for this Inventory Interface.

         Resolution ... Remove the Job Type.

- Business Unit Number Invalid

        CAUSE: This business unit number does not exist in the Business Unit Master file (F0006).

        RESOLUTION: Enter a valid business unit number or add the business unit number to the Business Unit Master file (F0006).