Linnworks and Peoplevox
Integration Agency & Consultants
Cogent2's AI-powered integration delivery is guided by operators who have seen the blame game between Linnworks and the warehouse. We connect Linnworks to Peoplevox so dispatch notifications are triggered by actual warehouse events. This gives teams confidence every order picked is correctly marked as shipped, preventing dispatch delays and customer complaints.
Mapping your Linnworks and Peoplevox architecture
We connect your Linnworks and Peoplevox integrations quickly, supporting ERP and WMS/3PL environments. Our consulting services are valuable because our system audit uncovers inefficiencies and integration gaps between Linnworks, Peoplevox, ERP, and WMS/3PL systems. This enables our consultants and your team to take decisive action, ensuring your technology ecosystem runs efficiently. With our expertise, you can deliver a reliable experience to your customers, confident that your operations are optimised for performance and growth.
Solution Design
For the Linnworks and Peoplevox integration, our design enforces a clear split between order management and physical truth. Linnworks acts as the central order reservoir and channel manager, while Peoplevox is the authority for warehouse execution and stock levels. We prioritise the precise mapping of Linnworks Postal Service tags to Peoplevox Carrier Services to prevent label errors that breach channel SLAs. A core trade-off we manage is sync frequency. While rapid stock updates improve accuracy, we typically sequence fulfilment pushes to Linnworks on a defined schedule to avoid sync loops where both systems compete for inventory mastery. This prevents the operational chaos of duplicate shipping or orders remaining Open in the ERP after dispatch. Finance teams run reporting from Linnworks, while the warehouse operates solely on the move-by-move truth within Peoplevox.
Managing data flows and carrier mappings
Data flows are designed to maintain a clean boundary between order instruction and physical execution. Linnworks acts as the reservoir, capturing orders from channels and pushing them to Peoplevox for fulfilment. We map Linnworks 'Postal Service' tags to Peoplevox 'Carrier Services' to ensure the correct shipping label is generated. The integration prioritises the return of despatch data from the WMS to the ERP, closing the loop on the order lifecycle and triggering tracking updates. Stock levels typically flow from Peoplevox to Linnworks on a defined schedule, often using the 'Available' quantity to protect against overselling. Monitoring is embedded to detect when a fulfilment update fails to pass back, preserving data integrity across both systems.
Orchestrating the stack via secure IPaaS
Leveraging IPaaS with ISO 27001 and SOC 2 and above security accreditations ensures secure, efficient integration between Linnworks, Peoplevox, ERP, and WMS/3PL systems. IPaaS simplifies connecting Linnworks and Peoplevox with ERP and WMS/3PL, reducing manual effort and risk. Benefits include robust data protection, centralised management, and compliance, making integrations reliable and future-proof.
Surfacing hidden gaps in the sync
Standard dashboards often fail to show the orders that have gone missing between systems. We focus on surfacing the hidden gaps: orders that were successfully sent to Peoplevox but never reached the 'Despatch' stage, or items shipped from the warehouse that remain 'Open' in Linnworks. This approach monitors sync exceptions, aiming to catch despatch note failures before they trigger duplicate shipments or customer service issues. By comparing the 'Available' stock in Peoplevox against the inventory levels in Linnworks, we help identify inventory drift before it leads to an oversell event. This provides an oversight layer designed to track the health of your fulfilment cycle.
Aligning warehouse ops with office teams
Handover focuses on the alignment between the warehouse floor and the ecommerce office. Ops teams learn to own the Peoplevox despatch triggers that update Linnworks, while the ecommerce team monitors the order status in Linnworks to catch items stuck in limbo. We define clear ownership: the warehouse typically owns stock accuracy in Peoplevox, while the office owns channel mapping in Linnworks. Daily checks often focus on discrepancies between Peoplevox 'Available' stock and Linnworks inventory levels to prevent overselling. Documentation is provided as a practical operating manual for daily triage, ensuring teams know how to resolve despatch note failures. Training is rooted in your specific carrier mapping and stock buffer rules for this integration.
Managing operational exceptions after go live
Post-launch, support focuses on managing operational exceptions rather than just technical uptime. We monitor for failure points specific to this pairing, such as despatch data failing to pass back from Peoplevox or inventory discrepancies between systems. Monitoring is designed to surface these issues before they impact your shipping SLAs. When a carrier mapping error or a sync issue is detected, we provide the guidance to help resolve it. This is intended to ensure that the integration continues to support warehouse operations without requiring constant manual intervention from your team.
Common failures
Despatch confirmation failure
Operational impact: Orders are shipped from the warehouse, but the despatch confirmation from Peoplevox fails to update the order status in Linnworks. These orders remain marked as 'Open', confusing customer service teams and triggering incorrect late-delivery alerts. This can also delay financial reconciliation, as revenue from these sales orders is not recognised promptly.
Prevention / Action: Design the integration to treat despatch notes as transactional events with a guaranteed delivery mechanism, such as a message queue. The integration logic must include automated retries for API failures when posting despatch confirmations to Linnworks. Implement monitoring to flag sales orders that remain in an open state for an unusual amount of time post-despatch, alerting operations teams to investigate.
Inventory sync loops
Operational impact: When both systems attempt to master inventory levels, they get stuck in a sync loop, where an update in Linnworks triggers an update in Peoplevox, and vice versa. This generates high API traffic, risks rate-limiting, and can cause widespread stock inaccuracies across sales channels. Ultimately, this leads to overselling or underselling, directly impacting revenue and requiring the ops team to perform constant manual stock checks.
Prevention / Action: Assign a single source of truth for inventory. In this model, Peoplevox must own the definitive record of physical stock. The integration should be configured for a one-way sync of stock level data from Peoplevox to Linnworks. Disable any functionality that allows Linnworks to write inventory changes back to Peoplevox to prevent conflicts.
Product data mismatch
Operational impact: If SKUs or barcodes on item records in Linnworks do not exactly match the corresponding records in Peoplevox, sales orders will fail to import into the warehouse system. Fulfilling the order is then blocked until an operations or data administrator manually corrects the underlying item data. At scale, this creates significant backlogs, delays shipments, and erodes the customer experience.
Prevention / Action: Establish Linnworks as the single source of truth for product master data. Before the integration attempts to create a sales order in Peoplevox, it should first validate that all SKUs on the order exist in the Peoplevox item catalogue. New items created in Linnworks should have an automated creation process into Peoplevox to ensure data consistency before any orders can be placed against them.
Order amendment and cancellation latency
Operational impact: A customer order is cancelled or edited in Linnworks, but the instruction does not reach Peoplevox before the pick-and-pack process begins. The warehouse team despatches the original order, leading to incorrect shipments, wasted fulfilment costs, and negative customer feedback. The CX and finance teams must then manage the time-consuming process of returns, refunds, and reconciling the incorrect fulfilment.
Prevention / Action: Order updates and cancellations must be handled as high-priority events, separate from the standard order creation queue. Before processing an amendment, the integration must query the live order status in Peoplevox. If the order is already in the picking or packing stage, the update request should be flagged for immediate manual review by an operator, preventing silent failures.
Frequently asked questions
How do we prevent Linnworks and Peoplevox creating an inventory 'sync loop' where they constantly overwrite each other?
This is managed by defining a clear source of truth. Linnworks manages the available-to-sell inventory across all channels, but Peoplevox is the master for physical stock in the warehouse. The integration ensures Peoplevox pushes stock adjustments and despatch updates to Linnworks, but not the other way around, which prevents these conflicting update cycles.
Our warehouse insists an order has been shipped, but it's still marked as 'Open' in Linnworks. How does the integration solve this?
This common failure happens when a despatch update from Peoplevox does not reach Linnworks. A correctly configured integration ensures that as soon as a despatch note is confirmed in Peoplevox, it automatically updates the status of the original Sales Order in Linnworks. This closes the order, prevents customer service from chasing already-shipped items, and removes the risk of sending a duplicate shipment.
How does the integration ensure the warehouse uses the correct shipping service for different channels?
A critical integration task is to map Linnworks 'Postal Service' tags to the corresponding 'Carrier Services' in Peoplevox. When a Sales Order flows into the warehouse system, this mapping automatically assigns the correct courier service level required for that channel's SLA. This prevents the warehouse team from having to guess, ensuring the correct shipping label is always printed for each order.
We're experiencing despatch delays because the warehouse team blames Linnworks for missing orders. How does an integration fix this?
The integration provides a definitive, timestamped record of when each Sales Order is successfully created in Peoplevox from Linnworks. This replaces unreliable manual processes and creates a clear audit trail. If an order exists in Linnworks but is missing from the warehouse pick list, the integration logs can confirm if and when it was sent, resolving disputes that slow down the entire despatch operation.