Building business Roadmap is phase 1 of the project.

In this phase you identify what how the business processes should be re-engineered in order to capture the broader vision.

Building business Blueprint is phase 2 of the project.

In this phase you define the "target business processes". You map business software's (SAP in this case) functionality to the target processes.

Just after the project is started, it is a job of a project manager to clearly identify the stakeholders.

Their expectation should be noted down.

If necessary their expectation needs to be adjusted. If they are expecting too much out of the project then they would be eventually unhappy.

The success of the project depends on the satisfaction level of the stakeholders.

It is important that stakeholders are kept in the loop through out (via meetings and emails etc).

Also it is important that stakeholders should be involved in all aspects of the project in order to keep their satisfaction level high.