There is could be one reason. Do you have more than 1 W2? If you have more than 1 W2 you might have gone over the SS max and claimed an excess on your original return. Check if you had an amount on 1040 line 31 which comes from Schedule 3 line 11. For 2023 the max for Social Security is $9,932.40 on $160,200 of wages. Then if your SS was reduced you have to pay the excess you claimed back.
