Calculate ATP

Overview

The Calculate ATP step recalculates Available-to-Promise values for products linked to purchase orders. ATP represents the quantity of inventory that can be promised to customers, considering incoming purchase orders and expected delivery dates.

Identifier

Configuration Properties

Behavior

What It Does

1. Identifies SKUs from order lines that have ReservedInventoryPurchaseOrderLineId set
2. Recalculates the ATP index for the affected SKUs
3. If SkipProductUpdate is false and SKUs exist:
   • Waits 1 second for index to update
   • Updates products with new ATP values and triggers export if configured
4. Returns success or error based on calculation result

Prerequisites

• Order lines must have purchase order line ID references
• ATP service must be configured
• Product export typically configured for ATP updates

Side Effects

• ATP index is recalculated for affected SKUs
• Product records updated with new ATP values
• May trigger product export to external systems

Business Cases

When to Use

• Purchase order allocation: When orders are linked to incoming POs
• Order cancellation: Recalculate ATP when PO-linked orders cancel
• Backorder management: Update availability promises

Example Scenarios

Scenario 1: New Order with PO Customer orders item not in stock but on incoming PO. Order line links to PO. Step calculates ATP to reflect the promised delivery.

Scenario 2: Order Cancellation Order with PO allocation is canceled. Step recalculates ATP to release the promised quantity back to available.

Scenario 3: Skip Product Update High-volume processing where product updates should be batched. Configure SkipProductUpdate=true to only update the index.

Scenario 4: No PO Items Order has only in-stock items without PO links. Step finds no qualifying SKUs and completes successfully without action.

Error Handling

Related Steps

• Calculate and Update Product Inventory - Updates inventory status on products
• Recalculate Reserved Inventory - Recalculates reservations