Another possible error message when trying to generate a Jamb profile code is, “Already generated Profile Code Names Does Not match Names you enrolled with NIMC.
It simply means the Name you used to register your SIM Card is different from the name you used to register NIN.
Your profile name is your SIM Card name. It should match your NINC name, i.e the name you entered while enrolling NIN should match with your SIM Registration name.
Some persons claimed that they were able to register Jamb profile even when the name on their NIN Slip and SIM Card is different. But for most persons, they get rejected.