§ 1575 Order returnable, when.

When a court issues an order of delivery, it sets a deadline for when the order must be completed and returned to the court. If the order is issued at the very start of a lawsuit, that deadline matches the same deadline given for the summons (the official notice telling someone they're being sued).

If the order is issued later, after the case has already started, then the deadline is simpler: it must be returned within 10 days from the date it was issued.

In short, this rule just sets the timeline for how quickly these delivery orders need to be handled, depending on when they were issued during the case.