How To: Set the maximum granules per order for a collection

This describes how to limit the number of granules per order for a collection in Earthdata Search by setting a tag on the collection. 

This functionality allows providers to specify collection-specific order limits as needed to ensure large orders do not adversely impact provider operations.

For a properly tagged collection, clicking "Download Granules" in Earthdata Search when too many granules are selected will display an error message, and the order will not be allowed.

The tag is edsc.limited_collections, and the order limit is specified in the tag data field "limit".

Step-by-step guide

1. If you do not already have one, generate an ECHO token.  (Note the id field in the response to the following command is your token.)

   curl -XPOST \
     https://cmr.earthdata.nasa.gov/legacy-services/rest/tokens \
     -H 'cache-control: no-cache' \
     -H 'content-type: application/xml' \
     -d '<token>
       <username>--ask task lead--</username>
       <password>--ask task lead--</password>
       <client_id>--ED Login client ID. Look it up in EECS or services.yml.erb--</client_id>
       <user_ip_address>--a valid IP address, can be anything. For example, 127.0.0.1--</user_ip_address>
   </token>’

2. Associate each collection with the edsc.limited_collections tag, and set the limit:

   --- to associate a single collection with the edsc.limited_collections tag and set an order limit, create a tag association and include a data field named "limit":

   curl -XPOST -i -H "Content-Type: application/json" -H "Echo-Token: <token from first step>" https://cmr.earthdata.nasa.gov/search/tags/edsc.limited_collections/associations -d '[{"concept_id":"C12345-DAAC_NAME", "data":{"limit":2000}}]'

   
   ---to associate multiple collections with the tag and set limits, you will have to first find all the concept_ids and then do it one at a time.  See examples in ticket  EDSC-1591 - Getting issue details... STATUS
   
   

curl -s "https://cmr.earthdata.nasa.gov/search/collections.json?include_tags=*&concept_id=C12345-DAAC_NAME"

curl "https://cmr.earthdata.nasa.gov/search/collections?tag_key=edsc.limited_collections" 

Related

CRM Search API: tagging

Limited order collections