The CHX Book Feed Interface Specification 5.8.2 Retransmission Request Response Message The Retransmission Request Response message is sent to the subscriber to acknowledge and update the subscriber of the status of retransmission request. Name Offset Length Data Type Comments Message Header 0 8 See Retransmission Message Header Source ID 8 1 Numeric Book Feed Source identifier Request Response 9 1 Numeric 0 = Request Accepted 1 = Request Rejected – Permission Denied 2 = Request Rejected – Invalid range 3 = Request Rejected – Exceeded maximum range 4 = Request Rejected – Exceeded maximum requests Print Date: 7/8/15 1:11 PM CHX Proprietary and Confidential Page 12 (17 .