Tip: Customers who wish to prevent Users from uploading file attachments when submitting an order can disable the file attachment upload.  Here is how to do this in PSP: 

How to Disable File Attachment Upload KB: 40216

  1. Go to Website > Finished Sizes.
  2. Select the Finished Size to modfiy.
  3. Enter CTRL F “Maximum Number of File Uploads Per Order
  4. Set this value to 0
  5. Select Update