To delete an entry in an attribute map, enter:
attradmin -A attrname -d -l localval [-r remoteval]
where attrname is the name of the attribute, remoteval is the combination of an attribute value on the remote system and the remote system name, and localval is the attribute value on the local system.
It you enter the command without the -r option, every entry that maps a value to the specified local value is deleted. If you include the -r option, only the entry that maps the specified remote value to the specified local value is deleted.
To delete an entry that maps GID 10 on a remote system
GID 20 on the local system, you might enter the following:
attradmin -A gid -d -l 20 -r 10@moon