Christian had right. I changed HDETUD1 to HDETUDXA in BITEARN NODES,
     but not in PEERS NAMES. I changed also PEERS NAMES.
     Listserv start up now, but runs not correct. Listserv did not read
     mail from list readers. All mail had sent to a list stay in reader.
     There are problems with 1.5o under VM/XA.
     Ary.