During the previous Tasks of the As-Is Understanding the Business Requirements have already been captured and registeered according to the guidelines in the Requirements Management Plan. So in an  ideal world the Business Requirements Catalogue is already filled correctly. In the real wordl this is mostly not true.

So this activity offers the opportunity to check if:

• all aspects in scope have generated requirements,
• the requirements are recorded according the guidelines of the Requirement Management Plan.

In other words, it is the first quality check for your Business Requirements Catalogue.