SQVI restriction in SAP Production?

Dear Experts,

Our system has Go-Live and I was told by my implementation functional consultant that NO users in PRD system should have access to SQVI transaction as SAP imposes penality for that.

I was never aware of this.

Still I checked in SUIM and no role has given this tranaction , still in SUIM some users shows that SQVI is assigned to them. I have verified and this transaction is NOT assigned to them.

So my 2 queries are :

1. Is it really problamatic from SAP point of view to have SQVI in PRD? (any licensing voilation etc.)
2. If Yes, then how to restrict every user in PRD so that SQVI is protected (directly or inderictly assigned)

Please let me know on this.

Appreciate your replies and points will be awarded.

\Regards ,

Garry