Optionalfirst_Opt-out keyword. For example, "LEAVE" if auto_update.to is a dedicated long/short number or a unique brand keyword like "Sinch" (if it is a shared short code). Constraints: Must be one word.
Optionalsecond_Opt-out keyword. For example, "LEAVE" if auto_update.to is a shared short code. Constraints: Must be one word.
Keyword to be sent in MO to remove from a group.