2.2.3.2.2 RDG-Correlation-Id

An optional header containing a GUID, generated by the RDG client, which specifies the correlation identifier for the connection, which can appear in some of the RDG or terminal server's event logs. This value, if provided, MUST be the same as provided in the RDP_NEG_CORRELATION_INFO structure ([MS-RDPBCGR] section 2.2.1.1.2) or RDPUDP_CORRELATION_ID_PAYLOAD structure ([MS-RDPEUDP] section 2.2.2.8).

The RDG-Correlation-Id header value is an ASCII representation of a GUID, including curly braces.