Time series synchronization cannot be performed on a pair of {0} object and timeseries object. The synchronize method can only be used for a single timeseries objects A specified property is missing a corresponding value. Property name must be a character vector or string. Interval must be a numeric value. KeepOriginalTimes must be a logical value. At least one of the specified properties is invalid. One or more of the time vectors is empty. Invalid synchronizemethod attribute Invalid interpolation method Quality vector must be initialized. The specified quality code has been rounded to an integer. You have specified a quality code that is not defined for this time series.