F61—POINT OF SERVICE (POS) DATA: İşlem anında POS’un spesifik durumu hakkında bilgi veren alandır. Position Usage Attribute 1 POS Terminal Attendance Indicator 0   = Attended terminal (Valid for MasterCard debit card and Maestro transactions only) 1   = Unattended terminal 2   = No terminal used (voice/audio response unit[ARU] authorization) (Valid for MasterCard debit card transactions only) n-1 2 POS Terminal Operator …