Get a grip. You are a supplier of wire/closures ... not an Openreach auditor, or engineer, or manager .... or anything to do with our business.
If the rules state that an 'above ground closure' CAN NOT be fitted onto underground cables, then that is how it is.
You don't appear to 'be up' on working regulations, or the fact that in some areas, underground cables were installed like this.
Just as the electrical regs change over the years, so do ours ...... so, to pick you up on your other faux-pas, if it HAD have been audited when it was first installed, it would have passed.