Create a new text message template, to set up a campaign's text. You'll need a name. The message isn't sent here: the template starts with a standard message (content in the response), which you change with POST /api/v1/campaign/template/sms/update. Returns the template with its id.

Prerequisites: a bearer token. Optional: a location id (store_id) to tie the template to one location.

Authentication: Account token. The template is saved under the account of the user behind the token. store_id, when sent, must be a location inside your own account tree; otherwise 422.

Rate limit: none.