Ensuring Accurate Stock Reservations Across Locations in ESHOPMAN

Ensuring Accurate Stock Reservations Across Locations in ESHOPMAN

Maintaining precise inventory counts is paramount for any e-commerce business, especially when managing stock across multiple locations. For ESHOPMAN merchants and developers leveraging the Admin API for advanced inventory control, a recent community insight highlights a critical behavior concerning stock reservations that warrants attention.

The Challenge: Inaccurate Reservation Updates

A key function within ESHOPMAN's Inventory Management API, specifically when updating reservation items and changing their assigned location, has been identified to behave unexpectedly. When a reservation for an item is moved from one stock location to another using the updateReservationItems function (e.g., from Location A to Location B), the system correctly increments the reserved_quantity at the new location (B). However, it fails to decrement the reserved_quantity at the original location (A).

This discrepancy means that the old location permanently reports stock as reserved, even though the reservation has moved. This can lead to inflated reserved stock figures, potential overselling, and inaccurate inventory visibility for your ESHOPMAN storefronts deployed via HubSpot CMS.

Understanding the Root Cause (Technical Insight)

Our community's deep dive into ESHOPMAN's core inventory service logic (built on Node.js/TypeScript) revealed the underlying reason. While the system correctly computes the necessary adjustments (a decrease for the old location and an increase for the new one), the subsequent process responsible for applying these adjustments primarily focuses on the new location. The inventory level at the original location is not included in the set of levels that receive these crucial updates, leading to its reserved_quantity remaining unchanged.

Expected vs. Actual Behavior

• Expected: After moving a reservation of quantity 1 from Location A to Location B, Location A's reserved_quantity should decrease by 1, and Location B's reserved_quantity should increase by 1.
• Actual: Location A's reserved_quantity remains unchanged, while Location B's reserved_quantity correctly increases by 1.

Demonstrating the Issue with ESHOPMAN Admin API

Developers interacting with ESHOPMAN's Admin API can observe this behavior in a custom backend script or test environment. Consider the following simplified ESHOPMAN API interaction:

const inventory = container.resolve(ESHOPMAN.InventoryAPI)
const stockLocati

const [locationA, locationB] = await stockLocations.createStockLocations([{ name: "Warehouse A" }, { name: "Warehouse B" }])
const item = await inventory.createInventoryItems({ sku: "ESHOPMAN-PROD-REPRO" })
await inventory.createInventoryLevels([
  { inventory_item_id: item.id, location_id: locationA.id, stocked_quantity: 5 },
  { inventory_item_id: item.id, location_id: locationB.id, stocked_quantity: 5 },
])
const [reservation] = await inventory.createReservationItems([
  { inventory_item_id: item.id, location_id: locationA.id, quantity: 1 },
])

// Attempt to move the reservation to Location B
await inventory.updateReservationItems([{ id: reservation.id, location_id: locationB.id }])

const [levelA] = await inventory.listInventoryLevels({ inventory_item_id: item.id, location_id: locationA.id })
const [levelB] = await inventory.listInventoryLevels({ inventory_item_id: item.id, location_id: locationB.id })

// Expected: levelB.reserved_quantity === 1, levelA.reserved_quantity === 0
// Actual: levelB.reserved_quantity === 1, levelA.reserved_quantity === 1 (incorrect)

Immediate Workaround for ESHOPMAN Developers

Until a permanent fix is implemented in ESHOPMAN's core services, a reliable workaround involves a two-step process to ensure accurate inventory levels when moving reservations:

1. Create a new reservation at the target location with the desired quantity.
2. Delete the original reservation at the old location.

Both creating and deleting reservations correctly trigger the necessary adjustments to inventory levels, ensuring that reserved_quantity is accurately reflected across all your ESHOPMAN stock locations.

Community Impact and Best Practices

This insight is crucial for ESHOPMAN users managing complex inventory scenarios, particularly those relying on precise stock figures for their HubSpot CMS-powered storefronts. By understanding this behavior and implementing the recommended workaround, you can maintain accurate inventory data, prevent overselling, and ensure a seamless customer experience. The ESHOPMAN community is actively engaged in identifying and addressing such nuances to continually enhance the platform's robustness.

Stay tuned to Move My Store and the ESHOPMAN Migration Hub for further updates and best practices to optimize your headless commerce operations within the HubSpot ecosystem.