Collection
string (1024 char max)
Optional
This entity stores the online URL(s) for the granule if there is any. Those URL either provides the site that user can obtain granule data or give the further instruction of obtaining the granule data.
http://sedac.ciesin.columbia.edu/es/esi/ESI_00.pdf
This data is taken from the xsd files directly. Any text that refers to granules, is most likely an oversight.
Collection/OnlineAccessURLs/OnlineAccessURL/URL
Access Information (ECHO)