E-document correction as paper documents correction may be done by two ways: you can replace the document or issue act of disagreement. You shall take into account that if the document is corrected via its replacement date of its signing with e-signature may differ from the date when business transaction was done. But there is no norms stating that such a date is important for source documents in the legislation in force, the belonging of the document to the period is defined by the date stated in document details.