API integration: how your business systems connect

An API gives one software system a defined way to request information or ask another system to do something. An integration uses those interfaces to connect a business task: moving an order into accounting, sending a shipment request or updating a customer record.

A useful integration needs more than a successful connection. Someone must decide which information belongs where, when it should move and what the team should do when it cannot.

Follow one record through the business

Take a completed order or invoice and trace its journey. List the systems involved, the people who check it and any details they copy by hand. This identifies the handoffs an integration needs to support.

In the BigBore online store, the order flow connects payment confirmation, Sage invoicing, delivery coordination and transactional email. The management screen brings payment, invoice and shipment status together so staff can follow up when an order needs attention.

Choose how the connection starts

An API request can ask for information or create a record. A webhook lets a service notify another system about an event. A scheduled process can check for changes or catch up on work. A real integration may use more than one of these approaches.

For example, a payment event can start the next order step, while a later check reconciles anything that was missed. Paystack’s webhook documentation describes event verification, acknowledgements and delivery retries. These are practical reasons to plan for repeated notifications rather than assuming every event arrives exactly once.

Map the information explicitly

Two systems may describe the same thing differently. Agree how customer names, invoice references, amounts, tax treatment and delivery details are represented. Identify the system responsible for each field, including who can correct it.

Keep the business’s identifier alongside the connected system’s identifier. That helps the team trace a record later. Test real variations such as an existing customer, missing information, a credit or a cancelled order. Accounting and tax rules require the appropriate business review.

Handle retries without duplicating the result

A slow response does not always mean the receiving system did nothing. Repeating a request blindly can create a second invoice or shipment. Use the destination’s supported duplicate-prevention controls, retain the outcome and define how an uncertain result is checked.

Cloudfusion’s Shiplogic-to-Sage work for MTE Xpress includes review, retry and catch-up tools. These controls support the people managing invoice transfers when an individual record needs attention. They are part of the workflow rather than an optional extra after connecting the APIs.

Protect access and expose useful status

Use the access needed for the task and keep credentials out of public pages, messages and spreadsheets. Plan who manages permission changes and what happens when a key expires or an account is removed.

Staff need clear status: completed, waiting, failed or requiring review. A useful error explains the next action without exposing confidential data. Keep enough evidence to investigate a transfer while limiting what is stored and who can see it.

What to bring to an integration discussion

• The source and destination systems, including the exact products and account types.
• One sample record and the expected result, with private details removed.
• The trigger, usual volume and any timing requirements.
• The rules for corrections, duplicates, cancellations and exceptions.
• The person who will review failures and maintain access.

Our integrations and automation service can assess the available interfaces and agree a first working flow. API availability, account permissions and provider limits need checking before scope and cost can be confirmed.