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CPF5341 - SNA session not established for remote location &5, device description &4. ( OS/400 )

CPI1466 during Backup   CL_GUI_FRONTEND_SERVICES - Frontend Services  
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Message : CPF5341
SNA session not established for remote location &5, device description &4.

Message Long Text :

Cause . . . . . : The Systems Network Architecture (SNA) session could not be established. The Synchronous Data Link Control (SDLC) frame size is not compatible with the request/response unit (RU) size. This is either a configuration error, or the SDLC frame size has been negotiated to a smaller value by the IBM i and the remote controller using the Exchange Identification (XID) command.
For retail and finance devices, the RU size is specified on the MAXLENRU parameter of the device description.
The SDLC frame size is specified on the MAXFRAME parameter of the line description. For retail and finance devices, it is also specified on the MAXFRAME parameter of the controller description.
Recovery . . . : Do one or more of the following and try the request again:
Verify that the frame size and the RU size values are compatible. Increase the SDLC frame size, or decrease the RU size, if necessary.
Verify that this configuration is compatible with the remote controller configuration. If configuration changes are made, the configuration must be varied off and on before the changes will take effect.

Message File : QCPFMSG
Library Message File : QSYS2924


General Material Data   SUBST_MERGE_LIST - merge external lists to one complete list with #if... logic for R3up  
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Length: 3264 Date: 20240419 Time: 140049     sap01-206 ( 2 ms )