API, EDI & automation

API, EDI & automation

Explains core data flows between merchants and partners: APIs, EDI, product feeds, order/status messages, error handling and pragmatic automation rules.

Published 14 October 2026Neutral editorial guide

Core idea: who talks to whom and when?

Commerce involves multiple data flows: product information, orders, availability, shipping status and invoices. APIs and EDI are common ways to move these data automatically. APIs are interface models, often over HTTP/HTTPS, allowing targeted queries and updates. EDI (Electronic Data Interchange) is a standardized format for structured business documents. Product feeds are usually exports for marketplaces or comparison services. It is essential to clarify which party initiates communication — for example a marketplace polling availability via API, or a supplier sending EDI order confirmations.

  • APIs for targeted queries and actions
  • EDI for standardized document exchanges
  • Feeds for broad product distribution
  • Clarify responsibilities early

Product data & feeds: Product data is the base for automation. A feed typically includes title, description, price, image URLs, dimensions and category. For automatic use, fields should be clearly defined and stable. Use unique identifiers like GTIN or SKU so recipients can reliably match items. Versioning helps: when fields or formats change, the receiving system must detect and adapt. Feeds can be delivered as files, via FTP, S3 or through an API. Choose the method your partners support and that fits your operational setup.

  • Key fields: ID, title, price, availability, images
  • Use unique identifiers
  • Version format changes
  • Distribute via file, FTP, API or cloud storage

Orders, status updates and acknowledgements: When an order arrives, a chain of messages follows: order acknowledgement, shipping notice, delivery status and invoice. APIs enable real-time queries and pushes, while EDI often transfers standardized documents with predefined codes. Define clear status meanings and set SLAs for responses. Both sides should agree which statuses are accepted automatically and which require intervention. Status updates should include timestamps, reference numbers and error codes when relevant. This makes automated processing possible and speeds up troubleshooting when issues occur.

  • Defined status codes and timestamps
  • SLAs for response and processing times
  • Auto-processing vs manual exceptions
  • Documented references and error codes

Error handling & sensible automation limits: Automation saves time but should not cover everything. Define rules when processes continue automatically and when they land in an exceptions queue. Common errors include missing fields, format mismatches, price issues or stock inconsistencies. Implement validation rules on both sender and receiver sides and use clear error codes. Provide monitoring and alerting so technical errors become visible quickly. For critical actions such as price changes, returns or order cancellations, keep a manual review step or a two-step approval to reduce business risk.

  • Validate before acceptance: check mandatory fields
  • Exceptions queue with clear responsibilities
  • Monitoring and alerts for technical faults
  • Manual check for high-risk decisions

Practical implementation steps: Begin with a small, well-defined process. For example, automate stock updates or shipping notices first. Define format, frequency and error handling. Test with a pilot partner in a sandbox. Document all fields, codes and SLAs in an integration guide. After a successful pilot, expand step by step and add new document types. Use existing standards and libraries to reduce effort. Consider middleware or integration platforms when connecting many systems. OpenDeal can act as a neutral conduit for product modules and data flows, but it does not replace the coordination required between trading partners.

  • Start a pilot with clear boundaries
  • Sandbox testing and an integration guide
  • Phased rollout after successful tests
  • Use middleware for multiple systems

This guide was created with AI assistance and published automatically. Binding product details are shown on the linked product pages.

Discover and shop

Shop for products simply and safely online

At OpenDeal, you can find products for many everyday needs and review the key information in one place. Clear images, visible prices and concise details help you compare an offer before you make a decision. Open the product details when you want more information about condition, stock, delivery or pickup. Compare suitable offers with your needs and budget, then review your cart before you complete the purchase.

Everything clear at a glance

Each product page brings together the price, condition, availability and other useful details for your decision. Read the details carefully and check which parts, options or services are included with the offer. Compare similar products with your needs, budget and the way you expect to use them. This makes it easier to choose an offer that is suitable for you.

Images help you choose

Review the product images carefully and look at the shape, colour, surface and other visible details. Several views can make the size, condition and important features easier to understand before you decide. Then read the description and check whether the written details match what you can see. This gives you a clearer picture of the product before purchase.

Your favourite in the cart

If you like a product, add it to your cart and review the price and quantity there. You can change the quantity, remove an item or continue shopping before you move to checkout. Before the next step, check the selected variant, condition and the available shipping or pickup method. Continue to checkout only when the full selection is correct for you.

Buying is this easy

Choose a product, review the information and add the item to your cart when it suits you. At checkout, enter the required details and review the full order before you confirm anything. Check the price, quantity, address and the available shipping or pickup option one final time. Confirm the purchase only when the details and total cost are correct.

Shipping or pickup

Each offer explains how the product will reach you and which conditions apply to the handover. Many products can be shipped, while other offers may be available for pickup at a stated location. Before you buy, review the location, possible costs and any important notes from the seller. This helps you choose the option that works best for your schedule and location.

Shop with confidence

OpenDeal presents offers clearly so that you can compare products and understand the key information before buying. Fixed prices support your planning, while images and concise descriptions make different products easier to assess. Take enough time and complete the purchase only when the offer matches your expectations. This keeps the process clear from the first search through to the final order.

Browse at your own pace and discover useful products for daily life, your home or a suitable gift. Open the offers that interest you and review the price, condition, stock and handover information. Before you buy, check the important details once more and give yourself enough time to decide. This helps you make a careful choice and understand what happens next.