The requirement has a confliction?

[jack fe]

In the dream car project,
Business Domain Model shows
One Request can have mutiple PurchaseOrder and Mutiple parts components.
But in Use Case Basic Flow,
One Request can have one part category and quantity of it, can have one PurchaseOrder based on winning bid.

Which assiciation relationship shold be followed in the class diagram?

I do not know if this question break the discussion policy.

[Mahesh Kumaraguru]

I think the examiners want "You the architect" to decide which of these two is the better choice and be able to justify that choice in your design decisions. Discussing the pros and cons of these two designs could be considered a violation of the Oracle policy because then we would be discussing the actual solution.