It is known as the Central Negotiation Department in general, however, this is a common name from a name of building in which the head office was located, and it is described as 'the Central Negotiation Committee' in the parliamentary documents of that time.
一般には中央交渉部（ちゅうおうこうしょうぶ）という名称で知られているが、これは本部が置かれた建物名に由来する通称であり、当時の議会の資料には「中央交渉会」と記述されている。