Add client contact method
Stores a Client's method, **replacing only the existing method of the same channel** (the other channel, if any, is untouched). Answers **201** with the resource, no `Location` header (a method has no standalone show route).
**Body** (JSON):
- `channel` (string, required) - `email`|`phone` for a Client; a Client never holds `whatsapp`.
- `value` (string, required, max 255) - a valid email address when `channel` is `email`, a valid phone number otherwise.
Requires a full-access token.
Authentication
AuthorizationBearer
Personal access token created in the Modular DS dashboard; read-only tokens can only call GET endpoints.
Path parameters
client_id
Request
This endpoint expects an object.
channel
value
Response
201 - Method stored
data
jsonapi
Errors
422
Unprocessable Entity Error

