Record companies sometimes require that a DSP makes available a Release under terms and conditions that may change over time. For example, the recommended retail price may change before, during, or after a specific event (Christmas, a sports event, etc).
In such circumstances the
DealList section needs to contain several deals the dates for which are consecutive without any gaps, i.e. as soon as one deal ends the other deal starts. This can be effected with both dates and date-times. If two subsequent Periods form a continuum (i.e. with no break in-between) there are two ways to express this: