workspace_bulk_edit_invalid
The bulk action needs another field (role for set_role, team_id for team actions, queue_id for queue actions, skills or remove_skill_ids for set_skills); errors[] names it.
Problem shape
Every non-2xx response is an RFC 9457 application/problem+json body. The type URI below is stable and machine-matchable, so branch on the final path segment (the code) and treat the status as redundant confirmation. See the error-handling guide.
{
"type": "https://docs.vocapable.com/errors/workspace_bulk_edit_invalid",
"title": "…",
"status": 422,
"detail": "…",
"instance": "/v1/…"
}