Casual earnings losses relief?

I am doing some trading in 2021 June and ended in that month with 500 GBP losses total. The trading action is buy and sells. Is this eligible to do an overpayment relief claim as I am doing my 2022-23 self-assessment? Thank you.

Hi Jerry Chan,
You can submit a claim for overpayment relief detailing what has happended for it to be considered.
This will have no bearing on the 22/23 return at this time as you will need to submit the claim for 20/21 in writing.
Thank you.