This only affects you if you have an Income Related Rent debt because you were investigated for benefit fraud. The investigation must have happened between 14 April 2014 and 21 December 2016. All Income Related Rent debt established since then has been calculated correctly.
We'll contact you to let you know if you're affected. You don't need to do anything.
If you are affected, your Income Related Rent debt will decrease. This means your overall debt with us will also decrease.