Jas,
First, congratulations!
Next, bear in mind that Pass/Fail is based on the overall score of the entire exam, not how well you did in any individual Domain. The Domains are not weighted equally: People = 42%, Process = 50% and Business Environment = 8%. That means if you hit a "needs improvement" in the Business Environment Domain, you did well enough in each of the others to make an overall "Pass."
Hope this makes sense!
Harry