63016: Failed to send freeform message because you are outside the allowed window. If you are using WhatsApp, please use a Message Template.

Failed to send freeform message because you are outside the allowed window. If you are using WhatsApp, please use a Message Template.

• [After April 1, 2025] WhatsApp templates can only be sent using Content Sid and Content Variables. Templates sent using body outside of a conversation window will fail with this error.
• 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.
• If the message was created with Content API or Content Editor it may be one of the following 3 issues:
• The customer has not included a messaging service SID
• The customer is still using "body" instead of "Content SID" and "Content Variables"
• The customer is using content type that is not supported for business initiated conversations, e.g. listpicker or location
• 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.

• Send a WhatsApp message using a template
• Include all the necessary parameters for a Content API or Content Editor Template and make sure you aren't sending with the wrong parameters
• If you are a publisher, register your Facebook Page with the Facebook News Page Index