http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode No changes or updates will be made to this version None planned notPlanned 011 notPlanned notPlanned 011 notPlanned In the otherwise unknown: http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode No changes or updates will be made to this version notPlanned 011 notPlanned right place A unknown: