Hi, Ludmilla, the two collections look good. I suspect you guys have thought through strategies that invalidate my comments below, which would be fine. Richard bundle.xml - Suggestion: add lid_reference to all targets including this collection's urn:nasa:pds:context:target:comet.3i_atlas data_*/ - Suggestion: divide files into subdirectories, as recommended in both the Standards Reference 2B.2.2.2 and Data Providers Handbook 4.3.2 - Please ensure the next version of the Lucy data dictionary handles value 3I/ATLAS data_*/collection.xml - These should have a DOI.