# Selling a Core

There may be ocassions when it is desired to sell a core to a customer. This is done by entering a “**C**” line type and entering “**-1**” (Negative 1) as a quantity. Because, in a core line, the quantity amount is automatically reversed from what you entered the end result is a core sale.

If you try this and it will not accept “**-1**” as a sale quantity it means that you need to change <u>Field 72 Allow Core Sales</u> in the Sales Parameter Maintenance, Screen 1 to a “**Y**” This program is accessed via menu path as follows.

9. **System Utilities…** -&gt; **3. System Setup…** -&gt; **4. Sales Desk…** -&gt; **2. Parts Billing Parameters** -&gt; **Screen 1 – System Defaults**