National Identity Management Commission offered this clarification via its Twitter feed on Tuesday.
“If your NIN was generated due to the BVN record harmonization with the National Identity Database, you will not have access to the NIMC mobile app and your NIN-SIM integration will be invalid.
“Kindly visit an enrollment center to complete your NIN registration,” the update read.
It comes a day after NIMC warned Nigerians to stay away from a fake app that claims to help link NIN to SIM cards.
It claimed the app was run by fraudsters who use it to harvest NIN and BVNs.