Correct me if i'm wrong but there has never been a points deduction for not complying with FFP. Plenty for clubs failing to pay wages etc.
FFP almost certainly breaks laws around competition which is why severe punishments are not handed out.
Depends which League you're looking at?
Birmingham 2018-19...-9 points. They also were charged for breach of a Business Plan in 2019-20. Guilty but no points. 3 year period ending 2017-18 then the Business Plan charge related to 2018-19.
Derby 2021-22 although this went back as far as a 3 season period ending in 2016-17 and beginning in 2014-15, -9 points and 3 more suspended thrashed out..oh and a Business Plan. By rights the League could have pushed for -17.
Reading 2021-22..-6 and a further 6 suspended if Business Plan adhered to. This 2nd -6 is currently under dispute/review. There could be further as the suspended-6 wouldn't serve to offset or mitigate against any other breach, they also had a soft embargo in 2020-21 and maybe since January 2020. For 3 year period ending 2020-21. By rights the breach size was -12.
Sheffield Wednesday...-12 although EFL partially culpable saw it halved.
Varied soft and not so soft embargoes.