Cannot execute planning operators Unconstrained and Profit Optimization in SAP2

Hi,

We cannot execute supply planning operators Unconstrained and Profit Optimization with user JSMITH in planning area SAP2, although these jobs were successfully executed by the same user in the past.

Any idea as to what could be the problem?

We are using SOP 3.0.2.1, EPM version 10.0 SP 18 patch 2 build 8873.

Thanks,

Bernard