Before publishing any map, you need to make sure that all mandatory properties are completed (it’s possible to set up data visualisation to highlight this).
If Approvals are being used you should also check:
Once the map has been published to your Process Library Sandpit site, it is possible to run various reports to check the status of the maps within the library, in particular information which is missing from the maps. These can be found in the Process Library menu option 'Reports' under section 4, 'Library Administration' and section 5 'Publication Checklist'.