Auth Source Code from the original authorization response.
This field contains a one character authorization source code used to provide information on the source or origin of the ApprovalCode being settled. If the transaction being settled was network authorized, this field must contain the value returned in the authorization response. If the transaction is a credit, or otherwise processed off-line, this field must contain one of the values below.
|6||POS device generated authorization code.|
|9||Not authorized (includes credits/refunds).|
|E||Off-line voice center or chip-approved transaction, manually keyed approval code (ie: referrals).|