Invoking PI webservice from Portal

I am trying to invoke a webservice defined in PI from webdynpro. NWDS7 SP8.

while importing the model using the URL - totally failed

using default destination: passed with error but failed at run time

on all occasions the error is:

exception getLocalizedMessage : Exception on creation of service metadata for WS metadata destination 'JCO_DX1_001_METADATA' and WS interface 'ManageSalesAreaOut'. One possible reason is that the metadata destination 'JCO_DX1_001_METADATA' has not been properly configured; check configuration.

i inserted some debug logs and looks like it is failing right at the start where i am trying to create the WSDL / webservice object / model.

I am on EP7 Sp14 java 1.4.2

PI is on 7.1 SP6

Any pointers to why and how it can be resolved.

Regards,

Nitin