In "Invoice approval journal" for an vendor invoice, if the expense line is filled in with account type "Project" and "Sales tax group" and "Item sales tax group" is filled in (to calculate VAT), you'll get an error when using the "Validate" button saying the invoice is not balanced and difference amount stated is equal to the VAT amount.
But the invoice will be validated correct and posted when using the "Post" button.
Are there any hotfixes for correcting the wrong code for the "validate" function?