Jim's daughter is 16 years old and we are told that Jim was 17 when she was born, so Jim cannot be older than 32 or 33. But the APB on him (on the computer) states that Jim is 35.
When Jim is Googling for "reclassering", it shows the Google site with one the Athens summer-Olympics doodles, which was online in August 2004, while the movie is set in the days after 6 May 2002.
A wide shot of the Binnenhof in The Hague shows the Hoftoren (the building of the Dutch Ministry of Education, Culture and Science). This building was finished in September 2003 and wasn't visible in the skyline of The Hague in May 2002.
The wide shot of the Media Park in Hilversum shows building cranes. At the time of the murder these weren't there and the trees next to the parking lot where Fortuyn was murdered, which are visible in news footage in the movie, were later cleared and dug out to make way for new buildings.
At the time of the murder of Pim Fortuyn the AIVD security agency was still called the BVD (Interior Security Agency). The AIVD was created on 29 May 2002.