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When your inventory is distributed across multiple fulfillment centers, Jetpack’s Order Auto Split Rules automatically split B2C orders to prevent fulfillment delays and optimize shipping. Choose between Partial Shipment Rules (which split orders when no single fulfillment center has complete inventory) or Product-Based Shipment Rules (which split orders based on specific product criteria).

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Order Splitting Options

Jetpack offers two auto-split options to help manage orders when inventory is distributed across multiple fulfillment centers:
  • Partial Shipment Rules automatically split orders when no single fulfillment center can fulfill the entire order
  • Product-Based Shipment Rules split orders based on specific product criteria
These rules apply only to B2C orders. Internal transfer orders (ITOs) and B2B orders are excluded from automatic splitting.

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Choosing Your Order Splitting Approach

  • Partial Shipment Rules
  • Product-Based Rules

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Partial Shipment Rules

By default, when an order contains SKUs or units that are not all available in one fulfillment center, the order defaults to Exception status until one fulfillment center can fulfill it entirely. Enabling Partial Shipment Rules prevents fulfillment delays by automatically splitting orders across centers when needed.

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How Partial Shipment Rules Work

Key Features:
  • B2C orders only: Both Partial Shipment and Partial Backorders rules apply only to B2C orders
  • Separate billing: Each split shipment is billed separately, with details visible on the Shipment Breakdown panel in the order details
  • Maximum shipments: By default, orders split into a maximum of 2 shipments. This can be customized to 2, 3, 4, or 5 shipments, based on available fulfillable inventory
  • Packaging exceptions: Orders will not split if they include items with specific packaging requirements (e.g., marketing inserts, Prop 65 labels, custom packages)
Custom Dunnage can be split as its own shipment. Adjust the Maximum Number of Shipments Per Order setting to avoid this.

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Partial Backorders

Partial Shipment Rules will not split orders if any of the SKUs are out of stock (OOS). To allow orders to split when SKUs are OOS, enable Partial Backorders Rules.When items are OOS, available SKUs ship as one order, while the order remains in Exception status until the backordered inventory is replenished. Once OOS items are restocked, the order automatically moves into Processing status, provided no other exceptions exist.Example:If an order includes:
  • SKU A at Fulfillment Center X
  • SKU B at Fulfillment Center Y
  • SKU C at Fulfillment Center Z
This would require three shipments (one per fulfillment center). You can manually split the order in the dashboard if you prefer to ship available SKUs immediately.

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International Shipments

By default, order splits are restricted to fulfillment centers in the same country as the customer. Override this by enabling the International Shipments setting.International Shipments toggle in Partial Shipment Rules settings
Ensure the maximum number of shipments setting corresponds to the number of fulfillment centers you use for optimal operation.

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Accessing the Partial Shipment Rules Page

Only Account Owners and Client Admins can configure partial shipment rules.
1

Navigate to Rules

From the Jetpack dashboard, click Orders on the left-hand navigation bar. Additional menu options will appear. Select Rules.Orders navigation menu with Rules option highlighted
2

Configure settings

You will be redirected to the Partial Shipment Rules page, where you can adjust settings including international shipments and the maximum number of shipments per order.Partial Shipment Rules configuration page showing Maximum Number of Shipments Per Order, Partial Backorders, and International Shipments settings

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Add-On Rules

Add-on rules (in combination with split rules) allow custom packaging to be assigned to shipments after being split. Using the packaging’s inventory ID or a keyword (located at the beginning or end of the item name), Add-on rules will:
  1. Review the products and total units per product already in the shipment
  2. Add specified products and total units based on the rule configuration
Example: If you have a Product-Based Shipment Rule configured to split all shipments containing exactly 1 unit of “Cat T-Shirt” into its own shipment, an Add-on rule can be used to add your “Custom T-Shirt Mailer” to only those shipments.

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Let’s Dive Deeper

Automation Rules

Automatically apply fulfillment behaviors to your orders

Destination-Based Rules

Route orders to specific fulfillment centers based on destination

FIFO Order Allocation

Prioritize older orders when inventory is replenished

Multi-Box Package Selection Rule

Control multi-box packaging behavior

Standard Packaging Split Shipment Rules

Learn about packaging constraints that affect order splitting

Back to Main Guide

Return to automation workflows overview
JetpackQuestions? Contact Jetpack Care.
If you have any questions or run into issues configuring order split rules, you can always contact Jetpack Care for help. Our team is always here to assist via Slack, phone, or email!