WhatsApp guides

What WhatsApp Business Platform errors and rules mean, and what Meta says to do about them. Every page is built from Meta's official documentation and links its sources; checked 18 October 2026.

Rules and account health

• WhatsApp number banned or restricted

  Why WhatsApp bans or restricts business numbers, how Meta's enforcement escalates, and the official steps to request a review, for the Business app and the API.

• The 24-hour customer service window

  How WhatsApp's 24-hour customer service window works, what you can send inside and outside it, the free entry point window, and what changed in pricing on 1 October 2026.

Cloud API error codes

• Error 131026: message undeliverable

  What WhatsApp Cloud API error 131026 means, the reasons Meta lists (not a WhatsApp number, terms not accepted, old app version) and the fix Meta recommends.

• Error 131042: payment issue

  WhatsApp Cloud API error 131042 means a problem with the payment method on your WhatsApp Business Account. The common causes Meta lists and where to fix them.

• Error 131047: re-engagement message

  WhatsApp error 131047 means more than 24 hours have passed since the customer last messaged you. Why free-form replies stop and how Meta says to reach the customer again.

• Error 131049: healthy ecosystem limit

  WhatsApp error 131049 means Meta held back a marketing template because of per-user marketing limits. How the limit works and how long Meta says to wait.

• Error 131051: unsupported message type

  WhatsApp Cloud API error 131051 means the message type is not supported. What Meta says to check and how to resend.

• Error 131056: pair rate limit

  WhatsApp error 131056 means too many messages from your number to the same customer in a short time. Meta's pair rate limit, burst rules and retry advice.

• Error 132000: template parameter count mismatch

  WhatsApp error 132000 means the number of parameter values you sent does not match the template's variables. What Meta says to check.

• Error 132001: template does not exist

  WhatsApp error 132001 means the template does not exist in the language you asked for, or is not approved. What Meta says to check.

• Error 133010: phone number not registered

  WhatsApp error 133010 means your business phone number is not registered on the WhatsApp Business Platform. Meta's fix and the registration rate limit.

• Error 368: temporarily blocked for policy violations

  WhatsApp error 368 means your WhatsApp Business Account has been restricted or disabled for a policy violation. How Meta's enforcement works and how to request a review.

Costs and tools

• WhatsApp Business API pricing (with Singapore and Malaysia calculators)
• WhatsApp link generator
• WhatsApp QR code generator