All output values that can be incorporated into report should be unique

[jesseeichar]

Consider CreateMapProcessor and ScalebarProcessor.

Crea Scalebar processor has an output value: subReport Map Map processor has an output value: mapSubReport

If you want to configure system the value name subReport is very generic and likely to conflict with another value which means that you will have to configure a custom output mapping. It would be better to have its default output be scalebarSubReport. This way if there is only one then the configuration is simpler.

We need to review all output values and update their default output names.