Certificates of Discharge/Exemptions for Household Charge and NPPR

Arising out of a purchase I recently made my solicitor presented me with printouts from the NPPR account and Household Charge account of the vendor. I would also add that he received an undertaking that if any or all payments were not made by the vendor that I would be reimbursed. The printouts showed all the properties that the vendor owned as well as the property that they were selling.
I researched the matter myself and have discovered the following.

In relation to the Household...

Certificates of Discharge/Exemptions for Household Charge and NPPR