Error 131026 is returned when a message cannot be delivered to the recipient. This is commonly caused by the recipient blocking the business, not having an active WhatsApp account on that phone number, or Meta privacy restrictions.
Verify that the recipient phone number is active on WhatsApp using a pre-send status check. Implement automatic CRM status tagging to mark the contact as Undeliverable and prevent repeated failed API requests. Do not retry sending repeatedly to the same number as this degrades your WABA Quality Score.
No. Meta only bills for successfully delivered conversations. Undelivered messages with error 131026 are not billed.
Configure your webhook to listen for status: failed with error code 131026 and immediately update your CRM contact list hygiene to pause marketing broadcasts to that number.
Our certified Meta API engineering team helps Indian enterprises diagnose webhook bugs, unblock banned numbers, and scale messaging limits safely.
Speak with Our Engineering Team