Go into Accounts Receivable, Receipts. Click add on the right to add a new receipt. Click the Mics. Receipt option. Enter all the information as you go down the screen. For the Credit type, select job/cost code. This allows you to post a credit/ reduction against your cost on the job. This is especially helpful for utility refunds and, in some cases, for back charges. This will not increase your amount billed or received on the job. It will show as a negative against the job cost code you choose.