The parameters used for a report, the form used to enter parameters and request a report, and the report itself must all agree on the same requirements.
Operation
The code used for each parameter must match the name of the form field supplying the value.
Parameters that must be present for the report to function must be marked as required (Req).
Specifying a default value for a parameter makes indicating that a parameter is required irrelevant.
Requests for reports that don't include all required values will be rejected.