has the meaning given to that expression in the Great Britain Companion Specification [GBCS]
the GBCS says:
In the context of a specific Device, a Remote Party whose Security Credentials are stored on that Device in at least one Trust Anchor Cell. And
Where a Remote Party is known to a Device by way of that Remote PartyÂ’s Security Credentials being stored on the Device (as specified in Section 4.3.2.5), the Remote Party is referred to as a Known Remote Party (KRP). Otherwise, it is referred to as an Unknown Remote Party (URP).