The concept of a default ACL does not exist for NFS V4 ACLs. Instead, there is a single ACL and the individual ACL entries can be flagged as being inherited (either by files, directories, both, or neither). Therefore, specifying the -d flag on the mmputacl command for an NFS V4 ACL is an error.

#NFSv4 ACL
#owner:smithj
#group:staff
special:owner@:rwxc:allow:FileInherit
 (X)READ/LIST (X)WRITE/CREATE (X)APPEND/MKDIR (-)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (-)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (-)WRITE_NAMED

special:owner@:rwxc:allow:DirInherit:InheritOnly
 (X)READ/LIST (X)WRITE/CREATE (X)APPEND/MKDIR (-)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (-)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (-)WRITE_ATTR (-)WRITE_NAMED

user:smithj:rwxc:allow
 (X)READ/LIST (X)WRITE/CREATE (X)APPEND/MKDIR (-)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (-)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (-)WRITE_ATTR (-)WRITE_NAMED