Hello Padmavathi,
System is behaving correctly.
Let me explain this.
First of all adding system information is not required if you are not using business roles,or you are expecting a routing futher in the workflow or you have to set system validitiy for the user.
System information is automatically picked by GRC as soon as you add single or composite role (not in case of business roles) .
If still you have business requirement (like adding parmeters id whcih are system specific) to add system in request , you need have a routing rule as soon as request is submitted to spearate role and system else you will get the same responce as you mentioned.
In your situation you can have a first stage as dummy stage, have routing rule to spearate role and system and have escalation enable after 1 min at dummy stage so request is automaticlly forwarded after 1 min and routing rule get executed automatically .
By doing this only roles will ne avaible at first stage for approval and even if approver want to see complete request they can see that .there is one optio nat stage level to see complete request even instead you get what you have to approve .
Hope this helps..
Ashish
(collapse the auth objects and attach a screenshot)