Well, not if you have already printed them.

If you haven't already printed them, are the invoices themselves flagged to not print in the first place?  We've accidentally done that on occasion.

OK I'll bite. Why don't you want to click the button to print those already printed?

Where do I check if the invoices are flagged no to print, I am new in MAS100

thank you for your help

To save pager since there are other user printing invoices too, so I want to print just the range that I want.

Let me break this to you gently. If you want to print a range and you click the button to Print Invoices Already Printed it will only apply to the selected range during this one instance of Invoice Printing. It does not reset the print flag on other invoices.