pranavbhasin

Hi I am a bit confused. 1. Comment by HMRC Admin 10 above states 'You can include them in the return as long as the losses are not more than 4 years old.' 2. Comment by HMRC Admin 19 above states 'You will need to notify the losses in a letter prior to claiming them so that we know they are valid'. Which one is true? I have realised that I had more capital gains losses in 2022/23 than I had reported. Can I just use the correct amount and show calculations for it while filing my 2023/24 self assessment to claim the correct amount of loss from that year?