When you see this warning sign in your Facebook Ads account, do not worry as it is an easy error to correct us mobile phone number database. The error is due to the fact that it has not been established which WhatsApp account is connected to the advertising account.
How can we solve this error?
In order to solve the error, we must first go to the “Group of Ads” section and then reach the option “Messaging Apps”.
Within “Messaging Apps, the channels through which users are going to get in touch through our ads are established. In our case we have chosen Messenger and WhatsApp. In the lower section we must go to the WhatsApp Business section and click on Connect Account.
On the next screen we proceed to include the country in which we are and the WhatsApp Business phone number that we want to link.
Once we have registered the phone number, we will receive a verification code to the phone we registered. We proceed to enter the number in the code box and click Continue.
When you return to the Messaging Apps option, the WhatsApp Business number that you have just linked will be displayed on the screen.
As you can see, when we register the phone number, the Facebook error that appeared at the beginning is automatically deleted. And through these simple steps we managed to solve this error. Gulf Phone Number List