These settings determine the name of the purchase order .PDF file that will be created for the division if the user has selected the option in Purchase Order Options to create files in the document attachments folder.
If this option is selected, the name of the file for each purchase order with be the job number followed by the purchase order number, separated by an underscore.
Example:
Job Number: AH0100101
Purchase Order Number: AH0100101009
Filename: AH0100101_AH0100101009.pdf
If this option is selected, the name of the file for each purchase order will be the name of the purchasing activity followed by the job number followed by the purchase order number, with each name separated by an underscore.
Example:
Purchasing Activity Name: 29 Gutters/Downspout
Job Number: AH0100101
Purchase Order Number: AH0100101009
Filename: 29 Gutters_Downspout_AH0100101_AH0100101009.pdf
From the Setup menu, select Divisions.
Or, click on the Divisions icon within the Setup toolbar.
Verify the division currently selected in the Division field is the correct division for which the Purchasing module settings for the division will be defined. If necessary, select a different division from the Division drop-down menu.
Click the 
Purchasing icon within the vertical list of icons on the left.
From the bottom of the Purchasing tab, select the file name format to be used, either Job Number_PO Number.ext or Purchasing Activity Name_Job Number_PO Number.ext.
Click on Save.
Continue with configuring the PO approval options as necessary, or click the Close 
button to exit the screen.
Purchase Order Numbering Options