Do we have a means to identify whether the buyer is a Central Purchasing Body

I was wondering how we could specify that the buyer is a CPB. We do not need this for the ESPD but in other document, like Notices, the ContractingPartyType could not be used for this (CPB would not disjoint in respect of the rest of the codes in the list).

I've been searching in the common components library and code lists and did not find any mention to the CPBs...