Adaptive RFC2 Model Error

Hi Experts,

In my project we have used Adaptive RFC2 model to call ABAP functions. All the JCo destinations are working fine and tested successfully.

But Its giving an error while executing one of the custom application.

Error :

java.lang.illegalArgumentexception: must not add role listener with role null

I have attached an error along with this.

May I know what could be the cause of this issue?

Thanks in advance.

Regards,

Sheetal