mu2sa2:
Each staff should link the Sim to his/her NIN. If the Sims were registered embloc by the company, individual staff will perhaps re-register the Sim in their own names before linking with NIN..

Then it is no longer company phone numbers but individuals.

My 10-digit NIN is not being accepted.

Spectrum22:
There are legitimate businesses that requires an individual owning more than seven sim cards, what now happens to this group?

There are other ways of linking your sim to NIN . You can use your mobile provide’s short code but with NIMC app you will will be able to link up to 7 sims

So use other methods to link your NIN when you have exhausted 7 slots provided by NIMC app