derivedDataType tspDateTime

This type represents a timestamp containing date and time also in the following format: yyyy-mm-ddThh:mm[:ss[.xxx]].
The length of the datas can be sorter, if needed. (leading zeros are not mandatory)

stringtspDateTime

Valid values: [0-9]{1,4}-(1[0-2]|0?[0-9])-(3[0-1]|[0-2]?[0-9])T(2[0-3]|[0-1]?[0-9]):[0-5]?[0-9](:[0-5]?[0-9](\.[0-9]+)?)?
  derivedDataType tspDateTime