Login to the https://developers.facebook.com/ page, there click on “My Apps” in the header as shown below.
As soon as you click on “My Apps” you will see your apps created. Click on one of your apps as shown below.
Now click on “WhatsApp” and then on “Getting Started”, you can see all these on the bottom-left menu.
In “Getting started” click on “see the Overview page” in “Step 5: Add a phone number”.
After this overview page will come, there click on the “Increase Limits” button.
Now click on “Start verification”.
Select your appropriate country and click on “Next”.
Herein below dialog box, fill in all the details same as mentioned in the documents, which will be uploaded in the following steps, and click on “Next” to continue.
Now select a contact method and click on “Next” to continue as shown below.
In the below step, you have to upload your document to verify your name, address proof, or number. And here upload the document from which you have filled in all the details in step 8.
After you upload the documents and click on the “Next” button, we will send a verification code to your registered email address. Go there and copy the code and paste it here. After you do all these processes, one popup will appear that your business is in verification and it may take more or less 1 or 2 days. As soon as your business is verified, you will be acknowledged with the mail that your business is verified.