Dataport GTS
"GTS has noted that flow data has not always been published correctly on the website. This is the case for transparency data that has been published since December 2011. The software responsible for the data exchange to the website is not working properly. The incorrect published flow data concerns data before the 1st of April 2011. It is expected that the software will be adapted early March 2012.
For the avoidance of doubt GTS wants to stress that the incorrect published data did not influence the correct billing of transport services and had no effect on the the near-realtime data that GTS provides to shippers for balancing purposes."