Diagnosis
When you change the date of a change number, you also change thevalid-from date of all objects that were edited using this changenumber. In this case, this is not possible for the following reason:
The change number was used in recipes. In recipes, you may not changethe valid-from date of a change status to a date before the currentdate. However, you entered a valid-from date before the current date.The system does not change the date.

Procedure
Choose a valid-from date as of today's date.