Message Oracle PGA-21110 - XLN received from partner LU string

ERRORXLN received from partner LU string
CAUSEAn Exchange Log Names (XLN) GDS variable has been received from the RRM at the partner LU . This is the first thing that occurs when communication is established with a partner LU for the first time since either the local RRM or the partner RRM was last started.
ACTIONInformational message.