Updating Credit Card Preambles for OPI

1. Click the Enterprise or property, click Configuration, and then click Tender/Media.
2. Double-click a credit card tender type to open it, click the Options tab, and then click the Credit Card Options subtab.
3. 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.

4. Click Add, and then configure the Start preamble and the Length based on the card payment type.

   See Credit Card Preambles for OPI for a list of preambles for commonly used card types.

5. Click Save.
6. Repeat Steps 2 through 5 for other credit card payment types.