One cannot submit claims indefinitely. A year is closed after three years, which means that for a performance in 2012 a claim could be submitted until the end of 2015. This year we will be closing the year 2013, for which claims can be submitted until October. Claims for years before 2013 can no longer be submitted.
Make sure that you submit your claims for 2013 before the 1st of October 2016. Otherwise we might not be able to process your claim.