Here's a list of common reasons why a porting request may be rejected.
Unpaid balance with current carrier
Most carriers request that accounts be in good standing before they will approve porting requests. Before making a porting request, pay any outstanding balances to your current carrier.
Pending service request
A request may be rejected if another service request is pending with the current carrier. You can request that your current carrier suspend all conflicting service requests so that the new porting request can be processed.
A porting request may be delayed or rejected when the address submitted on any of the documentation doesn't match the address of the owner on file with the current carrier. Before you resubmit, obtain a CSR (Customer Service Record) from your current carrier and provide documentation with the matching address to Plivo.
Name or signature mismatch
A request may be rejected when the name of the person authorizing the request doesn't match the name of the owner on file at the current carrier, or the signatures differ. To resubmit, obtain a CSR (Customer Service Record) from your current carrier and provide new documentation with the matching name and signature to Plivo.
Unauthorized contact or signature
Your request is likely to be delayed when the person authorized to make changes on the account is not the person who signed the letter of authorization (LOA). Complete another LOA with the authorized person and resubmit the porting request.
Make sure the phone numbers you wish to port are active with your current carrier. Contact your current carrier and reactivate the phone numbers you wish to port to resolve this issue.
Incorrect wireless PIN
This issue applies only to wireless phone numbers and occurs when the PIN provided for a wireless phone number doesn't match the one on file with your current carrier. Contact your carrier to obtain the PIN they have on file and resubmit the porting request.
Incorrect service account number
A porting request may be rejected when the account number you submit doesn't match the one on file with your carrier. Contact your carrier to obtain the account number they have on file and resubmit the porting request.
Invalid billing telephone number (BTN)
When the billing telephone number (BTN), a master number used to identify an account, doesn't match the one on file with your current carrier, you may face a delay in porting your number. Ask your current carrier for the BTN on your account.