i added a warning in a script to customer record but for some reason my warning doesnt show when the customer is overdue. it seems like netsuite allows one warning at at time. Is there a way to prioritize warnings

Why don't you create an array of messages for all the warning, error, info or whatever you want respectively. And display all at once pipe | separated. Netsuite can show multiple message boxes but it will show one dialog box for each message type only.