Service Autopilot does not handle much with COGS accounts. Cost of goods sold (COGS) refers to the direct costs attributable to the production of the goods sold in a company. This amount includes the cost of the materials used in creating the good along with the direct labor costs used to produce the good. A COGS account can be assigned to Products in SA for reporting purposes in QuickBooks. There is no COGS reporting in SA.
If you sync with QB and would like more information about COGS, please consult your accountant or Intuit.