Blank file names are permitted as placeholders in an Import Index Field for an Ordered DIP. This may be necessary to ensure that all fields in the Ordered DIP are accounted for. For example, one set of files to be imported may number 7. Another may number 10. In order to have all files import correctly, the first set of files will need to have three blank files as placeholders. The format of a placeholder should be “,”. This signifies a blank file name.