Is there a way to check the validity of credit card numbers before sending them for approval?
Yes. You can set up a validation mask for each of your credit card tender types. The validation mask tells Store Operations POS something about the numbers on the cards that can be accepted under the tender type. For example, on your tender type for Visa cards, you might set a validation mask that requires card numbers starting with 4 that are 16 digits long. You can set up validation masks in the Verification tab in the Tender Type Properties window for each of your credit card tender types. On the Database menu, click Tender Types, double-click the tender type that you want to modify, and then click the Verification tab. For more information, click the Help button in the window.
