Hi @micheal james ,
Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you are trying to deploy Akamai/Verizon CDN from your Pay-As-You-Go account.
Please note that this is by design.
Refer : https://learn.microsoft.com/en-us/azure/cdn/subscription-offerings
Please let us know if you have any follow-up queries on this.
Cheers,
Kapil