Adding Credit Card Tenders Select the Enterprise or property, click Configuration, and then click Tender/Media. Insert a record and name it for the card type (for example, Visa or MasterCard). Double-click the tender record to open it. On the General tab, set the Key Type to 1 - Payment. Click the Options tab, and then click the Printing Options subtab. Select 8 - Print Customer Receipt and 21 - Print Summary Totals. Click the Ops Behavior subtab, and then select 3 - Assume Paid in Full. Click the Credit Card Options subtab. In the Preambles section, if standard credit card preambles are defined, select the preamble records, and then click Delete. You must delete all preexisting standard credit card preambles. Click Add, and then configure the Start preamble and the Length based on the card payment type. See Credit Card Preambles for SPI for a list of preambles for commonly used card types. Click Save. Repeat these steps for other credit card payment types.