As soon as all connectors participating in the rebuilding or duplexing have confirmed that their use of the structure has been quiesced, the connectors are notified through the Rebuild Connect event. Note that the Rebuild Stop event and the Rebuild Connects Complete event may supersede the Rebuild Connect event. The users do not need to respond to this event, but instead should issue IXLCONN with the REBUILD option. During the Rebuild Connect phase:

• For rebuild, the system allows only rebuild connect requests to the structure from this point until all rebuild processing is complete. The system rejects all new connections with reason code IXLRSNCODECONNPREVENTED.
• For duplexing rebuild, the system allows new connections to the old structure and to the new structure if a connection to the old structure already exists for that connector. New connectors use IXLCONN to connect to the old structure and IXLCONN REBUILD to connect to the new structure. The CONAREBUILDPHASE field in IXLYCONA indicates in which phase the connection occurred (Rebuild Quiesce phase, Rebuild Connect phase, or Duplex Established phase).