In some locations, the In-country Authority requires the number to be registered with a Power of Attorney.  

Please be sure that the Power of Attorney you supply AVOXI matches the Company name of the order you just placed, or please provide Articles of incorporation of your company that details the powers of the legal representative, please make sure you also share your the legal representative's ID, for your reference visit: https://support.avoxi.com/en_US/phone-number-requirements/port-document-required-legal-representative-id-puerto-rico

Note: Power of Attorney's a notarized document giving the legal representative of the company to approve changes to their services.