1. Navigate to the Lookup Codes window (Brazilian Oracle Purchasing: Setup > Purchasing > Lookup Codes).

2. Enter PO/Requisition Reason, which is a predefined lookup type, in the Type field.

3. Define your own transaction nature lookup code in the Displayed Value field. This value appears in all lists of values that use the lookup code.

4. Enter a description for the lookup code in the Description field.

5. Enter an inactive date that the entered information is no longer active. Delete this date when you want to make the information active again.

6. Save your work.

Note: You cannot change the lookup type or its displayed value after you save the information in the window. You can change or update any other field.