The cost list is used to determine the standard cost for expenses recorded in Call Quote

Maintenance and Call Activity Recording. The cost list must have the same price list code as the corresponding repair price list specified on the service type. If no cost is found, the standard cost for the expense defaults to zero and must be specified manually by the user.

Expense cost list are defined with Type of E; the Amount Type must be P (price).

Cost lists are set up just like expense price lists, using the service category as a base and optionally including work code, service group, and product line. The same search algorithm is used with the call currency and a blank unit of measure.