Follow the steps below to reactivate an Adjustment Code.
Select Customer Setup > Codes… > Adjustment.
Place a check in the "Include inactive codes" box to include inactive adjustment codes in your search results.
Use the Search field to find the adjustment code by searching for the code name or description.
Select the Adjustment Code.
Click OK when the “This adjustment code is currently inactive.” pop-up displays.
Uncheck the Make this code inactive checkbox.