Many elements use string names as keys in model-driven interfaces instead of the numerical identifiers used in the classic CLI and SNMP.
Note: The string name can only be assigned or modified for these elements in releases before Release
            15.1.R1. Elements without names are automatically assigned a name (the identifier
            converted to a string) during an upgrade to Release 15.1.R1 or later, and cannot be
            changed without manually deleting and recreating the element. It is recommended that the
            following elements are assigned names before an upgrade to Release 15.1 or later.
all services (configure service vprn, vpls, epipe, and so on)
 
configure mirror mirror-dest
 
configure service pw-templates
 
configure service customer
 
configure filter ip-filter, ipv6-filter, and mac-filter
 
configure qos network, sap-ingress, and sap-egress
 
configure eth-cfm domain and association