What does "gross pay this is not a legal pay" mean and how can I correct it?

Hi there, 

I know how important it is to ensure that QuickBooks Online is reflecting the proper pay types and amounts for your business bookkeeping. This error message means that there's an issue with a certain pay type you're using. 

In this case, it's imperative that we receive more details and information in order to help you resolve this. 

I'd recommend reaching out to our tech support team so an agent can investigate where and why this error message is appearing in your account. I'm confident this will assist in getting you back on track in no time. 

Cheers.