Re: affidavit in civil case: subquently discover that it is incorrect. How do I recti
Beg leave of the court to withdraw the affidavit and substitute it with a new one, presumably. The other side may object as they have been preparing the case based on the information you have already given, and you'd probably find yourself penalised for costs in some way.
In a criminal case, only the oral evidence and exhibits properly admitted into evidence count, so with limited exceptions, affidavits won't form part of the evidence.
Or do as Towger says ;-)