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SAP MFS PCo Connection Error - Data transfer to communication layer of PLC & failed()

Hi ,

I am doing a testing for the connection between SAP EWM MFS and PLC simulator through SAP plant connectivity 2.0(PCo. 2.0).

And now , I have done everything about the configuration according to relevant configuration document for PCo2.0. And in EWM SM59, and the connection to RFC destination for PCo is successful.

But when I come to EWM monitor (/SCWM/MON) -> Materila flow system -> Communication channel, and choose one PLC and click 'start chanel', and I got error :

Data transfer to communication layer of PLC & failed(). -/scwm/mfs072

And I debugged ,and found it was to call RFC_EXECUTE_COMMAND in RFC destination(configure in SM59 for PCo.) ,and the return code(SY-SUBRC) is 99.

Does any one has similar experience? .

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