iControl REST to create (with external file transfer) and update an external data group

I just tested iHearF5s solution on TMOS v11.6.0 and it worked seamless as the related tmsh command: i.e. $ tmsh modify sys file data-group external_datagroup_acl { source-path http://10.131.131.52/external_datagroup_acl.class } results in REST API call of: $ curl -sk -u admin:admin -H "Content-Type: application/json" -X PUT \ -d '{"name":"external_datagroup_acl","partition":"Common","source-path":"http://10.131.131.52/classimport/external_datagroup_acl.class"}‘ \ https://localhost/mgmt/tm/sys/file/data-group/~Common~external_datagroup_acl | \ sed -r 's/$/\n/; s/,/,\n/g; s/(\[)/\1\n/g; s/(\])/\n]/g' The changes in the external file were reflected immediately in the LTM data-group for both the tmsh and API approach.