Here are some reasons why you may have failed to submit business verification on your Facebook Developer App, even though your business account has already been verified by Meta:

You may not have connected your developer app to your verified business account. You may have submitted incomplete or inaccurate information. You may have submitted documents that are not supported by Meta. Your business may not be eligible for business verification. To troubleshoot the issue, you can try the following:

Make sure that your developer app is connected to your verified business account. You can do this by going to the App Dashboard and clicking on "Settings" > "Basic" > "Verification." Review your business verification application and make sure that all of the information is complete and accurate. Make sure that you have submitted the correct types of documents. You can find a list of acceptable document types on the Meta Business Help Center. If you are still having trouble verifying your business, you can contact Meta support for assistance. Here are some additional tips for submitting a successful business verification application:

Make sure that your business name matches the name on your business documents. Use clear and legible copies of your documents. Crop and resize your documents so that they fit within the required dimensions. Save your documents in a supported format, such as PDF, JPG, or PNG. If you have already tried all of the above and you are still having trouble verifying your business, you can try contacting Meta support for assistance. They will be able to review your application and provide you with more specific guidance.