Getting error: Simulation Prep Failed ; Knowledge base not Found

Hi All,

we upgrade CRM system from  5.0 to 7.0 ehp3 ;

We are using PME for product modeling;

We executed 2 reports suggested by SAP for model database conversion;

Now in web UI we are getting error in Product simulation : simulation failed ; Knowledge base not found

In debugging found that this error is coming from FM "CRM_PME_KB_PROFILE2"

this FM is returning 21 value as a return parameter for one product and raising the error;

For all remaining products we are not getting any error;

Please provide your inputs to the problem;

Any inputs are highly appreciated;

Thanks,

Imran