There may be a number of reasons the tenant's details have not been verified. The first things you want to do are:
Check you have entered in the details exactly as per the documents provided (even one incorrect letter can cause verification to fail!)
Ensure you have entered in all of your applicant’s previous addresses (sometimes the tenants new address may not match the old address listed in the database)
Some other reasons this may occur:
The applicant has only just received their documents and the database has not yet been updated
The applicant has only just turned 18 and is not yet listed in any databases
If you have checked all the information above, the tenant may be using fraudulent documents to try and obtain the rental property. We suggest you conduct further checks on your tenant and ask for additional information to be provided where possible