SMP 2.3 Exposing oData services

Hello,

I have exposed an oData service of NW Gateway via SMP 2.3

http://<NWGATEWAYHOST>:<PORT>/<PATH>?$filter=KEY%%20eq%20KEYVALUE        works fine

http://<SMPHOST>:<PORT>/<PATH>?$filter=KEY%%20eq%20KEYVALUE                         works fine

http://<NWGATEWAYHOST>:<PORT>/<PATH>(KEYVALUE)                                                works fine

http://<SMPHOST>:<PORT>/<PATH>(KEYVALUE)                                                                 fails

The error message is: 500 Proxy connection [<PATH>(KEYVALUE)] on Domain [default] not found.

What am I doing wrong ? Seems that it cannot find the Application ID followed by brackets () while it should find just the Application ID ??

Best regards,

John