Purpose: Use this screen to define the vendor response code to use for authorizations that you approve without receiving a response from the authorization service.
Code field: Enter the code to use for authorizations that you approve without receiving a response from the authorization service. You might use this automatic authorization process if you are expecting a substantial delay before you receive the authorizations from your service bureau, and you consider the likelihood of receiving declined authorizations to be low.
When is automatic authorization possible? You can approve authorizations in this way only if all three of these assumptions are true:
• this system control value is set to a valid response code for the authorization service
• the Immediate response field for the authorization service is unselected
For more information: