You can define the schedule used to release waves for picking in the warehouse for a given day. You can define the different times and days that waves belonging to a shipment group are released.
For example, if you have a shipment group (S1) defined for a specific carrier that only picks up shipments at 3 PM on Thursdays and Fridays, you would not want the system to generate pick waves for shipments belonging to that group on Monday at 9 AM.
You might want the wave to be released earlier than 3 hours before the pickup time to allot for picking, packing, value-added services, and so on. Using the wave release schedule you can schedule waves for S1 to be released for picking only on Thursday and Friday at noon through 12:30. In this scenario, as the previous pick tasks for the day are completed during the timeframe you have scheduled for S1, the waves are released on Thursday and Friday between noon and 12:30.
However, if for some reason of the warehouse has fallen behind on pick tasks, and the S1 waves were not released between the specified timeframe, these shipments are stamped and added to the next scheduled wave release timeframe for S1. For example, the warehouse falls behind on its pick tasks on a Thursday morning. The previously released waves spill into the noon to 12:30 timeframe and the S1 waves do not get released. In this case, shipments in these unreleased waves are stamped and picked back up for wave release on Friday.