Get some of your ONCS money back!
Codon members who have sports rights at de Bongerd can get a subsidy for participating in the ONCS. This subsidy will cover half of the expenses you make for the sports part of the participation fee. This means you can get about 9 euros back. To get the subsidy you will need to give your WBA number, this way Thymos can check wether you actually have sports rights.
Your WBA number can be derived from the number next to the barcode on your WUR card. You need to remove the first four and the last two numbers. If the first number of the code that's left after this is a zero you also need to remove the zero.