It enables to set validity of records, that are saved in a history. Only the date, no time, is saved. Always only one record can exist to one date. The name of a user, who has changed the record, is also edited with the change of a date. The entries are sorted chronologically and it is possible to delete them by pressing F8 key. Only a user who has the right to  Change time-valid record can edit or delete a record.

This functionality is used for the fields, that have a legislative significance (e.g. change of a company name, change of ID-No in the Suppl./Cust. card, or Change VAT rate in the Article card). They always take effect to the decisive date, which differs from the date we enter it into the K2 system. E.g. correct data are printed in the documents according to the validity of the records. When printing of documents with a historical entry the relevant date for evaluating is the date of accounting transaction and stock documents - Date of Issue,

It is an overview of a history of field changes. The date including time is recorded. The user can not change the date and time in history. If the user performs another overwrite of the field within 9s, the changes may not be recorded.