Mistakenly Reported State Refund After Divorce – Can My Ex-Husband Claim It Instead?

We filed a joint tax return for 2023 with my husband. We received an $800 federal refund, and the $500 state refund was carried over to the following year. In 2024, we got divorced and are filing our tax returns separately for 2024. When I filed my 2024 return, I forgot about this and mistakenly reported that I received the $500 state refund (which I actually didn’t). If my ex-husband files his return now and states that he didn’t receive anything and requests the $500 refund, would that be correct? I would prefer not to amend my 2024 return, and if it’s possible for him to claim it, I would like him to do so.