OTP verification on mobile if customer selects COD

[coderom]

On the check out page there can be multiple or couple of methods to payment or to process next to complete the order like COD or payment through cards. If customer select cards they no worry but if customer select COD as a payment method or order method then what if customer enters wrong mobile number because we are not verifying the mobile number so if customer selects COD as a method then its mobile number should be verified by sending an OTP on mobile number and if he succeeds then only order should be forward or order should move next or complete and if user is enable to verify the OTP set on mobile then order should be stop or cancelled.