If first 6 letters of file name is "Master, no entries allowed

If user of the form does not follow instructions (to copy form & save in another folder with another name) user entering data in master is given message “This form must be saved in job folder before entries are allowed!”
Need macro to issue this warning if data entered into any of the 14 open cells of "Master"
Thank you

Thank you.
Want you to know I am out of town and will not get to it for over a week.

Thanks for letting us know. Very much appreciated.

I am sure my lack of knowledge is the reason I could not get what you sent to work.
Questions -
is there something that should precede your "If Left ..." like I use when for a message when a file is opened - like Private Sub Workbook_Open() ??
Or does the fact that i did not put your "Re: Use an Worksheet_Change event on these cells, "any of the 14 open cells" " in with your If statement ?
THANK YOU!!!!!!!!!!