You must record the usage of jobs in the job journal. You invoicing the customer for job costs with a sales invoice. If you sell items to a customer during a job, you can post the items in the job journal, as well.
Open the Sales Invoice window to create a new invoice.
In the Sell-to Customer No., enter a customer number. Then enter a date in the Posting Date field.
Select the sales lines. Click Functions, Get Job Usage.
In the Get Job Usage window, fill in the fields. For Help about a specific field, click the field and press F1.
Click Posting, Post to post the invoice.
Posting Job Sales before Usage