Need Assistance Completing WhatsApp Business Number Registration

It looks like you might be facing difficulties adding a phone number to your WhatsApp Business Account after connecting it to AWS End User Messaging Social. This issue can be frustrating, but let's walk through some steps to help resolve it.

First, it's important to note that adding a phone number to your WhatsApp Business Account (WABA) involves a specific process to be followed on the AWS End User Messaging Social console. Here's what you should try:

1. Open the AWS End User Messaging Social console and navigate to the "WhatsApp business accounts" section.

2. Look for an option to "Add WhatsApp phone number" and select it.

3. You should be directed to a page where you can launch the Facebook portal. This will open a new login window from Meta.

4. In this Meta login window, enter your Meta developer account credentials and select your business portfolio.

5. Choose the WABA and WhatsApp Business Profile you want to add the phone number to.

6. Follow the prompts to enter the phone number you want to register. This number will be displayed to your customers when you send them messages.

7. You'll need to verify this number, either through a text message or a phone call. Choose your preferred method.

8. Once you receive the verification code, enter it as prompted.

If you're still encountering a 502 error after following these steps, it could indicate a temporary server issue on AWS's end. In this case, you may want to try the following:

1. Wait a short while and attempt the process again, as the issue might resolve itself.

2. Clear your browser cache and cookies, then try again.

3. If the problem persists, it would be advisable to contact AWS Support. They can provide more specific assistance based on your account details and the exact nature of the error you're experiencing.

Remember, the process of adding and verifying a phone number for WhatsApp Business can sometimes take time, especially due to security measures and regulatory requirements. If you continue to face issues, don't hesitate to reach out to AWS Support for further assistance.
Sources
Add a phone number to a WhatsApp Business Account (WABA) - AWS End User Messaging Social