Why is the "scheduling tool" considered to be an EEV and not an OPA?
First, here is the part out of the PMBoK which i am talking about Pg. 173):
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6.1.1 Plan Schedule Management: Inputs
6.1.1.1 Project Management Plan
...
6.1.1.2 Project charter
...
6.1.1.3 Enterprise Environmental Factors
Described in Section 2.1.5. The enterprise environmental factors that influence the Plan Schedule Management process include, but are not limited to:
• ...
• ...
• Project management software provides the scheduling tool and alternative possibilities for managing the schedule;
• ...
•...
6.1.1.4 organizational Process Assets
Described in Section 2.1.4. The organizational process assets that influence the Plan Schedule Management process include, but are not limited to:
• Monitoring and reporting tools to be used;
• ...
• Schedule control tools;
• ...
• ...
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My question here is the following:
We are talking here about tools in EEV and also in OPA.
So why is PM software which provides the scheduling tool considered to be an EEV whereas a reporting toll or also a schedule control tool are considered to be an OPA?
Where is the difference?