Sales Tax Health Check
What is the issue?
You have some items of a given type that have a sales tax categor configured and other items that do not.
Why is this a problem?
This is not necessarily a problem, but you should review the settings to see if you have assigned all the items you need a sales tax category.
If an item is not assigned to a sales tax category then sales tax will not be charged when it is bid on.
What do I need to do?
Review that the sales tax categories are assigned correctly.
You can also prevent this check from failing by creating a 'ZeroTax' sales tax category with a 0% rate and assigning items that are non-taxable to this category, so every item would have a sales tax category assigned.