SWAP logic during shipping

EPASS Support

30-Apr-2026

The system uses SWAP logic during shipping to improve operational efficiency, especially in warehouse environments that handle large volumes of identical products.

For example, in a distribution warehouse with many identical items (such as washers and dryers), a specific serial number may be reserved for an invoice. However, requiring staff to locate that exact serial can be time-consuming. Instead, users can ship the nearest available unit, and the system automatically performs a serial swap in the background.

This approach is commonly used by high-volume operations to streamline shipping and transfer processes.

Configuration

This setting can be configured in:
Wireless Inventory Variables → Tools > System Maintenance > Variables > Wireless Inventory → On Shipping “Spoken For” Serial Numbers. Choose one of the options below.

Available Options

1. Do Nothing
The system performs the swap without any warning or notification. Users can ship a serial different from the one originally reserved.

2. Warn
The system displays a warning message when a serial swap occurs, but users can still proceed.

Behavior for Do Nothing / Warn:
When the setting is “Do Nothing” or “Warn,” a serial can be shipped to Invoice A even if it was reserved for Invoice B. Invoice B loses the reservation, and Invoice A takes the serial. This is called Invoice A “stealing” the serial from Invoice B.

3. Stop
SWAP logic still applies during shipping, and serials may be swapped as part of normal processing. However, the system ensures that Invoice B retains a reserved serial after the swap, preserving reservation integrity while still allowing flexibility.

Behavior for Stop: When set to “Stop,” Invoice B always keeps its reserved serial. If only one serial exists and it’s already reserved for Invoice B, scanning it for Invoice A will not swap it and the serial stays with Invoice B.

How to Prevent Serial Swapping

If strict control is required and serial numbers must never be reassigned:

• Enable Exclusive Reserve
  This ensures that once a serial is reserved, it cannot be swapped or reassigned under any circumstances, effectively disabling SWAP behavior.