"Reversal date" field Accural header data

Hi All

I have accidentally deleted the reversal date entry from the header data of accural document (FBS1) and saved it. Now am not able to see the "Reversal date" field to key in the old date. Is there any way to make this field visible again to re enter the date? or how do I deal with this now appreciate you inputs.

Thanks & br

Katya