OK. What you need is a database name, not a database backup file name. Your database name is probably ACCOUNTING. I'm updating the code to check for a database backup...

That script should not be tied to a specific SQL Server version. That being said, I tested only against a SQL Server 2016 instance and if that fails for you,...

The first line of defense is SQL Server’s CHECKSUM verification, but to be certain that a database is corruption-free, you need to run regular DBCC

https://www.red-gate.com/hub/product-learning/sql-clone/sql-clone-quick-tip-offloading-dbcc-checks