pub const RELATED_ENTITY_GUID: u16 = 0x0081;Expand description
PID_RELATED_ENTITY_GUID (DDS-RPC 1.0 §7.8.2). 16 byte = GUID of the counterpart endpoint (request writer ↔ reply reader, or request reader ↔ reply writer). Binds the two topics into one logical RPC endpoint pair.