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A possible reason could be the different date-/time settings in the Source- and Target-Systems.
To exclude the format as a possible source of errors the "Check Date and Time Format" button should be used.
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This verification is not necessary but helpful assistance to eliminate defects.
However, it may happen that further errors occur as the System reads User-Tables (SU*) during the check, and not every Docu Performer-User has adequate permission to do so.
To adjust date and time settings if necessary please follow the steps below:
Start Transaction su01
Choose relevant User
Choose Tab “Defaults“ (in German: “Festwerte“)
Verify that “Date Format” and “Time Format (12/24h)” are matching for the relevant User in the Source- and Target-System
If not, adjust these settings