failed to connect to z/os Q Manager

[Micka]

Hi there
I'm a newbie to Qflex. Just trying to connect a V7 Q Manager on z/os
(same connexion is OK thru Websphere MQ Explorer), but I always get
the following error message :

Failed to connect to qmanager MQS1 because
com.ibm.mq.pcf.PCFException: MQJE001: Code achèvement '2', Motif
'3015'.

When using the DISCOVER function, Q managers are well discovered, but
seen as Window plateforms. Then, trying to change the parms from Win
to z/os brings the same error message again & again. And yes, I filled
up both the Server Command Queue Name field (with default
SYSTEM.COMMAND.INPUT) and the Command Server Reply Queue field (with a
Qlocal named SYSTEM.QFLEX.COMMAND.SERVER.REPLY specially defined for
Qflex) ...

Any idea that could Help ?
Thanx in advance 4 yr help

Best regards
Micka.