Quick Answer
To understand why WhatsApp campaign or template messages fail, first look up the exact failure code (for example 131049 or 131026) in WhatsApp Reports / Campaign Logs; most undelivered cases trace back to Meta’s daily marketing frequency cap, invalid or blocked recipient numbers, unapproved or paused templates, insufficient prepaid wallet balance, or sending free-form text after the 24-hour Customer Service Window.
Primary Causes of Delivery Failure
The panel will show one of the causes below next to the failed entry:
- Meta Marketing Frequency Limits (Error 131049): Meta allows each WhatsApp user to receive roughly 3–5 marketing templates from all businesses per day. Once a person reaches this threshold, additional marketing templates return “Healthy Ecosystem Limit Reached”.
- Invalid, Unregistered, or Blocked Numbers (Error 131026): The target mobile number is invalid, not on WhatsApp, switched off or out of coverage, or the user has blocked your business profile.
- Template Status Issues: If the template shows Pending, Rejected, Paused (due to negative user feedback or spam reports), or Deleted inside Meta Business Manager, Meta blocks delivery.
- 24-Hour Customer Service Window Exceeded: Free-form text and canned replies are allowed only within 24 hours of the customer’s last incoming message. Outside this window, you must use a pre-approved template.
- Billing & Wallet Balance Issues: A depleted prepaid wallet prevents dispatch. Meta charges apply only to successfully delivered messages; failed dispatches cost ₹0 and the reserved amount is auto-credited back.
Step-by-Step Delivery Troubleshooting Guide
- Check Panel Delivery Logs. Go to WhatsApp Reports → Campaign Logs and note the error codes for every undelivered row.
- Run a Utility vs. Marketing Diagnostic. Send a standard Utility template (for example an order confirmation) to the same recipient.
- If the Utility template delivers but the Marketing template fails, Meta’s per-user daily marketing cap is in effect (Error 131049).
- If both fail, continue to the next step.
- Test with a Control Number. Send the same campaign to an internal number that you know is active on WhatsApp.
- If the control number receives the message, the original recipient number is invalid, offline, or has blocked your business account (likely Error 131026).
- If the control test also fails, suspect template approval status or low wallet balance.
- Verify Template Variable Mapping. Check that every CSV column header (such as {{1}}, {{2}}) matches the variable placeholders in your approved template, that no header cell is blank, and that no trailing special characters remain.
- Confirm Wallet Balance and Rate Card. Make sure the prepaid wallet has funds. For current country rates and category pricing, visit the MyOperator Pricing Page.
Escalation Rules & Boundaries
- Escalate to your Account Manager for prepaid wallet top-ups, rate negotiations, or to request an upgrade of Meta daily messaging limits (for example from 1 k to 10 k messages per day).
- Internal Support to Tech Support escalation happens when panel logs show server-level API time-outs or webhook drops on approved templates and the wallet balance is sufficient.
Need Help or Support?
For unresolved issues, contact MyOperator Support:
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