Upon accepting our invitation to manage your ad inventory through Google Ad Manager, you should receive an email from Google prompting you to complete identity verification. You can also check your verification status in the ‘Payments’ section of your Google Ad Manager account. For more details, click here.
Once your identity is verified, the address verification process will be triggered and a postcard with your PIN will be sent to the address provided in your Google Ad Manager payment profile. It could take 2-4 weeks for the PIN to arrive in the mail.