Change a saved QR design. Send its id, name and template_type; the other fields you send replace the saved ones, and fields you leave out keep their values. The location's plan must include review solicitation (email or text); otherwise 400. Returns the updated design.

Prerequisites: a bearer token for the account, and the design's id (id in GET /api/v1/qr-codes/template/list).

Authentication: Account token. The design must have been created under your token's account; otherwise 404.

Rate limit: none.