Create or update multiple accounting vendors
Allows for the creation or updating of multiple vendors in a single request. Maximum 100 vendors per request.
API version to use (optional, defaults to latest)
(Beta — this header is available in sandbox and not yet in production.) Client-generated unique key (UUID/ULID recommended). JSON requests: the first 2xx response is cached for 24h and replayed on a same-key retry with a matching body; a different body returns 422. Non-JSON requests (e.g. file uploads): the key is single-use — any same-key retry returns 422 regardless of body. See Idempotency for full details.