This is why Walmart stopped carrying guns for a while in the first place. Walmart has a HUGE problem with record keeping b/c of employee training and turnover. They had an employee from another department "help" a customer in sporting goods and sell a gun without the proper NICS at one point.
As they should, guns are serious business and missing guns or shoddy recordkeeping make the industry look bad.
Imagine how the country survived all those years without the ATFE poking their nose in business records.