Moving phone numbers to a new provider can sometimes be a hassle due to port order rejections and delays. Established processes and procedures, including FCC regulations, exist to help protect customers from unauthorized porting activity. Common reasons for port order rejections include address mismatch, incorrect business name, authorized name, account number, billing telephone number (BTN), passcode/PIN, and pending orders. To avoid these issues, accurate Customer Service Record (CSR) information is crucial. Bandwidth offers a CSR lookup tool & API to help verify CSR information and reduce rejections during the porting process.