The cancellation of Issued Documents, whether real or test, MUST be cancelled on the corresponding day, since in this way they have no effect and remain as cancelled documents.
Doing it in a post-dated way implies the MANUAL AFFECTION to Information Tables which takes many man-hours to perform the modification. In addition, they can generate inconsistency in the information, which in turn leads to time-consuming corrections, leaving doubts about Novohit's consistency.
As it is not part of the operational support, all manual overrides will be done at low cost as if it were a particular adaptation.