If you use the features in the Purchases & Payables application area, you must create links to the G/L accounts. The links are created by setting up one or more vendor posting groups.
Open the Vendor Posting
Groups window.
In the Vendor Posting Groups window, fill in the various fields. For Help about a specific field, click the field and press F1.
Repeat this procedure for each posting group you want to set up. You can set up as many posting groups as you need.
Assigning Posting Groups to Vendors