Is there any solutions for the issue?
It seems to me that the error indicates the OAM authentication didn't occur, the OAM login authentication should appear and it's not coming, in this case:
- Double check the WebGate setup, having all resources protected and unprotected as in Par I
- In oamconsole > Mobile Security > Mobile Oath Services > Default Domain > Summary > Check “Allow Multiple Resource Servers”. This appears in a screen-shot but it's not clearly documented.
- Once you have previous settting you should be able to fill the "Scope Namespace Prefix" which can cause the issue you are having