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Connecting E-Commerce to an ERP

Whether e-commerce platforms and ERP systems can be integrated requires confirmation of API documentation, data definitions, authorization, and testing environment. Knowing only the ERP brand or software name is insufficient to determine feasibility and cost.

DFocus Integrated Marketing | 2026-10-24

Start with the Business Process You Want to Improve

Businesses should first describe how they currently handle goods, inventory, and orders, and what repetitive tasks they hope to reduce. For example, after receiving an order on the website, should an ERP order be automatically created? When should the website update the available quantities after ERP inventory changes? First, confirm the purpose of the operation, and then decide on the data flow and synchronization frequency.

II. Obtain four pieces of information from the ERP vendor

• API documentation: What data can be read or written, field format, and error response.
• Licensing and Fees: Is the current version open for integration? Is it necessary to purchase modules, accounts, or services?
• Testing environment: Does the test environment have a test account, test data, and a technical contact to assist with troubleshooting?
• Usage restrictions: connection method, access source, call frequency, and maintenance period.

If no interface is available, transitional methods such as file exchange or manual import/export can be discussed; however, the actual feasibility needs to be confirmed individually, and it should not be promised in advance that all systems can achieve real-time bidirectional synchronization.

III. Identification Methods for Consistent Product and Inventory Requirements

The website and ERP system should confirm the correspondence between product numbers, specifications, units, and warehouses. The same product name does not necessarily mean the same product; color, size, product combinations, and discontinued status should also be included in the rules. Inventory should also distinguish between recorded inventory, available quantity, and reserved quantity to avoid using different definitions for both ends.

IV. Include order exception scenarios in the specifications

• When is an order sent to the ERP system: after it is created, after payment is made, or after manual confirmation?
• Which end handles cancellations, refunds, returns, and partial shipments respectively?
• How do discount, shipping, and invoice information correspond to the amount?
• How to resend orders and avoid creating duplicate orders after a delivery timeout or failure?

Payment, shipment, and inventory status should have clear sources of maintenance, and it should be confirmed who is responsible for any changes. Do not consider the entire process complete after testing only one normal order.

V. Permissions and records also fall under the scope of integration.

Integration accounts should only have the necessary permissions, and testing and production environments should be managed separately. Account keys should not be transmitted via public forms or general inquiry emails. Furthermore, failure notifications, processing records, and query methods must be confirmed so that customer service and administrators can determine whether data synchronization has been completed. Unnecessary sensitive information should also be avoided in the records.

VI. What tests should be included during acceptance testing?

• General merchandise, multi-specification merchandise, and non-existent product codes.
• Situations involving insufficient inventory, order cancellations, partial shipments, and returns.
• Connection interruption, repeated transmission, and retransmission after failure.
• The amount, discount, shipping cost, and document information must be consistent.
• Test data cleanup, official switchover, and support contact.

How can DFocus assist with the assessment?

Please provide the website URL, ERP name and version, existing API documentation, desired integration processes, budget, and launch date. DFocus will assess the scope based on the provided documents and technical support, coordinating the division of labor among the website, ERP, and hosting. Whether development costs, ERP licensing, third-party services, and subsequent maintenance are charged separately should be specified in the quote and contract.

This document is for requirements planning reference only and is not an operational document for a specific ERP system; feasibility, timeline, and cost need to be confirmed based on the actual system and specifications.

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