To port a number IN, the customer must provide three things from their losing carrier:

• Existing carrier account number
• Billing zip code
• Account password / Transfer PIN

Any of these wrong = port fails. The most common cause of port failures is the customer using the wrong account number. Some carriers (Verizon and T-Mobile, for example) issue more than one number — a billing account number and an OSP account number. Telgoo5 needs the OSP value.