This solution applies to Job Cost when you don't have Accounts Receivable, Billing, and Contracts installed.

Determine the billing entry that you need to adjust

1. From the Job Cost inquiry menu, select Billings, Billing Summary, select Current, and click OK.
2. Double-click on the job that the billing affects.
3. The view shows all Draws for the job. Double-click on the applicable Draw to drill down to the Transactions and view the billing detail entries.
4. Click the Select icon, or any column heading, to add a column for the Invoice. There are two invoice fields available in the JC - Transaction record. Choose the Invoice field that's first when sorting the fields by Order, Alphabetical Order (AR Invoice instead of Invoice).
5. Note the Job, Draw, Invoice, Transaction Type, and Dates for the billing that you need to adjust.

Enter the Adjustment

1. Select Tasks, Enter Billings.
2. Enter a line item using the same information as the original billing except for the amount. Make sure to use the same draw IDs as the original billings.
3. In the amount field, enter a positive amount if you're increasing the billing or a negative amount if you're decreasing the billing. Verify the correct retainage amounts calculated. Make sure the correct retainage type appears in the Bill Ret? column: H for retainage held, and B for retainage billed. If the type is incorrect, click in the Retainage box and then click Bill Retainage or Hold Retainage, as appropriate. In the following tables, Work Billed is abbreviated as WB, Work Retainage Billed is WRB, and Retainage Billed is RB.
   

   Amount	Retainage	Ret Bill?	Transaction Type
   X	X	B	WRB
   X		H	WB
   X	X	H	WB
   	X	B	RB

   To zero out Work Retainage Billed (WRB):

   Amount	Retainage	Ret Bill?	Transaction Type
   -X	-X	B	WRB

   To increase Work Billed (WB):

   Amount	Retainage	Ret Bill?	Transaction Type
   +X	+X	H	WB

4. Save and post entries.
5. Select Inquiry, Billings, Billing Summary.
6. Verify the draw total under the job is the correct amount. Drilling down to the billing entries level will show the original and adjusting entries made to this draw.