Integration Directory - Connecting via NWDS

Hi SDNites,

I wanted to connect NWDS with integration directory and am not able to establish the connection. Below error is being obtained.

SAP Process Integration Designer is supported from AEX usage type  from release 7.31 onwards.

Note :

1. I am using SAP PI7.31 with dual stack installation.

2. I do not want to develop iFlow. I just wanted to establish connectivity and do the build from NWDS which can effectively be done from Integration Diretory.

Regards,

Abhi