WhatsApp Business Cloud API: Message Accepted but Not Delivered

I’m using the WhatsApp Business Cloud API to send a template message. The API request returns a status of "accepted," but the recipient is not receiving the message.

Request Details:

• Request URL:

  POST https://graph.facebook.com/v20.0/<phone_number_id>/messages 

• Request Body:

  {     "messaging_product": "whatsapp",     "recipient_type": "individual",     "to": "<Mobile Number>",     "type": "template",     "template": {         "name": "booking_details",         "language": {             "code": "en"         },         "components": [             {                 "type": "body",                 "parameters": [                     {"type": "text", "text": "chennai"},                     {"type": "text", "text": "salem"},                     {"type": "text", "text": "tn15505"},                     {"type": "text", "text": "star"},                     {"type": "text", "text": "23.02.2024"},                     {"type": "text", "text": "koyambedu"},                     {"type": "text", "text": "bus stand"},                     {"type": "text", "text": "10:00 a.m."},                     {"type": "text", "text": "₹5055"},                     {"type": "text", "text": "L1/S,L2/S"}                 ]             },             {                 "type": "button",                 "sub_type": "quick_reply",                 "index": "0",                 "parameters": [                     {                         "type": "payload",                         "payload": "PAYNOW_PAYLOAD"                     }                 ]             },             {                 "type": "button",                 "sub_type": "quick_reply",                 "index": "1",                 "parameters": [                     {                         "type": "payload",                         "payload": "CHANGE_DETAILS_PAYLOAD"                     }                 ]             }         ]     } } 

Response:

{     "messaging_product": "whatsapp",     "contacts": [         {             "input": "receiver",             "wa_id": "id"         }     ],     "messages": [         {             "id": "wamid.HBgMOTE4MDU2MTg1NjI5FQIAERgSMUQwQzU3MjVENDBBMEQ5NTk5AA==",             "message_status": "accepted"         }     ] } 

What I've Tried:

• Verified that the template is approved and matches the template ID.
• Confirmed the recipient's phone number is registered with WhatsApp.
• Ensured the phone_number_id and access token are correct.
• Checked that the recipient has opted in to receive messages.
• Verified there's no issue with my WhatsApp Business Account (no low-quality rating or rate limiting).

Despite the message being accepted, it’s not delivered to the recipient. What could be the reasons for this, and how can I troubleshoot or resolve this issue?

I have successfully created a webhook and configured it to handle incoming messages and send responses using Twilio's API. However, I'm currently using a Twilio-provided WhatsApp Business number. I need to switch to my existing WhatsApp Business number so that when clients message my number, it triggers the webhook and Twilio API sends the response.

1.Created a Twilio account and set up the WhatsApp Sandbox for testing. 2.Verified my WhatsApp Business number with WhatsApp. 3.Configured webhook URLs in the Twilio console to handle incoming messages. 4.Successfully handled incoming messages and sent responses using Twilio's provided number.

In the page setup on Meta For Developers it says that the account (test number) does not exist in the Cloud API. I was previously able to run tests normally with the provided test number (receiving messages on my personal phone), but since yesterday afternoon, I've been getting some message like:

"Failed to send message. The account does not exist in the Cloud API. Use the /register API to create an account first."

Making the request in Postman, I have the following response:

"error": {     "message": "The account is not registered",     "type": "OAuthException",     "code": 133010,     "error_subcode": 2593006,     "is_transient": false,     "error_user_title": "The account does not exist",     "error_user_msg": "The account does not exist in the Cloud API. Use /register API to create an account first.",     "fbtrace_id": "A6fN7xoCSrj2t1dW_Qvv5d0" } 

In my Flutter project (VSCode), the Debug Console also shows:

"flutter: {error: {message: The account is not registered, type: OAuthException, code: 133010, error_subcode: 2593006, is_transient: false,..."

Despite my best efforts, I've reached a dead end... help me please.

I've tried everything I can think of: checking all the API settings, sending messages to different numbers, reviewing the documentation, and searching the internet for similar issues. But nothing seems to work. I just need to get the tests running again.

I am building a e-commerce platform in WhatsApp using WhatsApp Business API. I created and connected the catalog using Facebook commerce manager. But I was not able to display the categorized collection of my products. It is displaying in WhatsApp catalog like a whole list. I need to categorize it.

I tried creating sets/collections in commerce manager but couldn't find a way to reflect them in WhatsApp catalog.

I am building a website in which i want that when a user places an order, store owner should receive the order details in his whatsapp. Like First and last name, address, email, mobile and products which he purchased. Currently i tried Twilio for this purpose, but i don't want to use any 3rd party for this. I want to use only CORE PHP and whatsapp business api or library to achieve this.

Here is what i have done so far.

`<?php require 'vendor/autoload.php'; use Twilio\Rest\Client; $accountSid = '0000-0000-0000-0000-00000'; $authToken  = '0000-0000-00000-00000-00000'; $twilioNumber = 'whatsapp:+12000000000';  $whatsappNumber = 'whatsapp:+1255844885454';  $firstName = $_POST['first_name']; $lastName = $_POST['last_name']; $address = $_POST['address']; $townCity = $_POST['town_city']; $mobile = $_POST['mobile']; $totalprice = $_POST['totalprice']; $orderDetails = "First Name: $firstName\nLast Name: $lastName\nAddress: $address\nTown/City: $townCity\nMobile: $mobile\nTotal Amount: Rs$totalprice"; $client = new Client($accountSid, $authToken); try {     $message = $client->messages->create(         $whatsappNumber,         array(             'from' => $twilioNumber,             'body' => $orderDetails         )     );     header("Location: checkout.php");     exit(); } catch (Exception $e) {     echo 'Error: ' . $e->getMessage(); } `