Product: Programmable SMS
Failed to send freeform message because you are outside the allowed window. If you are using WhatsApp, please use a Message Template.
- This message failed to be delivered to the user because it was sent outside the messaging channel's allowed conversation window. For WhatsApp messages initiated by the business, you must use a pre-defined template.
- For Facebook Messenger messages initiated by the business, only publishers registered with the Facebook News Page Index (NPI) are allowed to send notification messages outside the 24-hour window.