Hi there, @byomtov. 

I'm with you in resolving this error message you received when recording a bill. 

Let's check your company preference and ensure to turn off or uncheck the Synchronize default item classes. 

Ensure also that the Use individual line discounts to total the order level discount in the "advanced sales order preference" to lump discounts under a line item is sent to QB is uncheck. 

Then, check that all your ship methods have an "other charge" item associated with them. 

For future reference, check out this link to learn more about adding, editing, and deleting items in QuickBooks. 

Feel free to message again if you have additional concerns. I', always around to help.