ERP–MES integration: preventing duplicate and missing transactions

An HTTP response is not the whole business transaction

A production record may reach ERP while the response is lost in transit. Resending it must not create a second inventory movement. Integration needs a traceable, verifiable outcome, not just a successful request. Define what accepted, processed and completed mean to the business before choosing transport details.

Give every data item an owner

Document the source of truth for material codes, work orders, recipes, actual quantities and consumption. If a value can change independently in two systems, define conflict resolution. Units, decimal precision and time zones belong in the data contract. Two quantities can look identical while representing different units.

Use persistent transaction identifiers

Assign each business event a durable identifier so the receiver can recognise an event already processed. Microsoft’s Retry guidance highlights the side effects of repeating operations. Temporary network failures may be retried with limits and delays. An invalid material code should instead enter a review queue; repeating it indefinitely adds noise without resolving the fault.

Design reconciliation from the beginning

Separate sent, accepted, processed and failed states. Operations staff need to see the failed record, its cause and a safe recovery action. Daily reconciliation should compare transaction identities as well as totals. Restrict manual correction permissions and retain the reason for each change. A support team should not have to inspect application logs for every business exception.

Pilot example: weighing to production posting

In an illustrative flow, a weighing record is linked to a batch and work order, validated and sent to ERP. Test disconnections, double scans and cancelled orders. This is a design example, not a customer result. Nexus Core Studio scopes ERP/API integration together with the source equipment and the interfaces needed to operate it.

Related services

• ERP, SAP & API integrations
• Weighing & ERP integration

Further reading: Moving to .NET 10: an enterprise modernisation plan for 2026

Sources and scope

• Microsoft — Retry pattern

Sources checked: 30 October 2026. Implementation steps are general engineering guidance from Nexus Core Studio and should be validated for the organisation and operating environment.

The cover is an AI-generated illustrative scene, not a photograph of a customer project.