Type name: REV
Type value: The default is a single date-time value. Can also be reset to a single date value.
“date”, “time”, and “date-time”: Each of these value types is based on a subset of the definitions in ISO 8601 standard. Profiles MAY place further restrictions on “date” and “time” values. Multiple “date” and “time” values can be specified using the comma-separated notation, unless restricted by a profile.
Examples for “date-time”:
(note the bold text)
I don’t see any error here. Please provide more details about why you think the used date-time format is wrong.