MaintenanceOn this pagecoreto be discussedcalval ingestWGISSWGCVMaintenance 1 Definition Activities sustaining equipment and software in current operational configuration. Notes Examples Sources CEOS/WGISS/DSIG/GLOS ESA PDGS Glossary, PGSI-GSEG-EOPG-LI-13-0033 (MM-PDGS Glossary Issue 2.0_forReview.docx) Term RelationshipsParentsGrandparentsChildrenGrandchildren