The TS_SHUTDOWN_DENIED_PDU structure contains the contents of the Shutdown Request Denied PDU, which is a Share Data Header with no PDU body.
file:///C:/ts_dev/TestSuites/MS-RDPBCGR/TestSuite/Src/TD/latest_XMLS_16may/RDPBCGR/ _rfc_ms-rdpbcgr2_1_2_3_1.xml
        /// <summary>
        /// Parse TS_SHUTDOWN_DENIED_PDU
        /// (parser index is updated according to parsed length)
        /// </summary>
        /// <param name="data">data to be parsed</param>
        /// <param name="currentIndex">current parser index</param>
        /// <returns>TS_SHUTDOWN_DENIED_PDU</returns>
        private TS_SHUTDOWN_DENIED_PDU ParseTsShutdownDeniedPdu(byte[] data, ref int currentIndex)
        {
            TS_SHUTDOWN_DENIED_PDU pdu = new TS_SHUTDOWN_DENIED_PDU();

            // TS_SHUTDOWN_DENIED_PDU: shareDataHeader
            pdu.shareDataHeader = ParseTsShareDataHeader(data, ref currentIndex);

            return pdu;
        }
        private byte[] EncodeShutdownDeniedData(TS_SHUTDOWN_DENIED_PDU shutdownRequestDeniedPduData)
        {
            List<byte> dataBuffer = new List<byte>();

            RdpbcgrEncoder.EncodeStructure(dataBuffer, shutdownRequestDeniedPduData.shareDataHeader);

            return dataBuffer.ToArray();
        }