The alternative to a replenishment location is a replenishment zone (SLG). The only difference is in zone replenishment, you are not specifying a location for the item, only that the item must be in any location within the zone. Using zone replenishment will not allow for multiple pick locations within the zone but you could have the same type of location in multiple zones.

If both replenish location and replenish SLG are in use, the replenish Location takes priority; however, best practice is to replenish by location or zone, not both.