1) Invoice is getting posted even without clearing the quality in case invoice blocking setup has been removed in Quality association parameters. It should not happen.

2) Invoice is not getting posted despite quality order having been passed for that particular bill. Let i purchase sugar 10000 kg but it comes under 4 bill that means 4 GRN will be created and subsequently 4 different quality order will be generated as per GRN/invoice number but i only passed quality of 1st bill and when i am doing invoicing of 1st bill then it is not getting posted because error shows open quality of whole item. This is not recommended. Invoice is posted as per it's GRN qty and if the quality of that particular GRN has already passed then it should not block the invoice.