Field Definitions are Available Here
Collection
string (80)
Unique identifier of the DIF (Directory Interchange Format).
AE_DySno
/AssociatedDIFs/DIF/EntryId
/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
Identification Information (ECHO)