Negative File
The Negative File
is a list of reference numbers of specific items that the system tracks to prevent fraud or loss incidents (for example, involving stolen gift certificates or bad accounts.) When the system detects one of these reference numbers during transaction
input at the POS, the system invalidates entries such as check tenders, and nonmerchandise or user-defined transactions.
Structure
Screen Element |
Description |
|---|---|
|
Specifies a type of negative file. This field refers to the sequence number assigned to a specific negative file type (that is, attached to a specific POS function). You can define up to 9 negative file types. |
|
Specifies file identification numbers to be checked against. This field refers to the reference numbers that you want the system to track and validate during transaction input. |
|
Specifies a reason code, if desired, for rejecting a reference number (for example, Return code 1 = Expired.) |