Start an API integration with a business rule, not two system names
“Connect the store to our CRM” is not a sufficient development scope. For CRM and ecommerce integration, establish which event creates or changes which record. A new order, customer update and cancellation are different operations. A connection being enabled does not prove that all those processes work correctly.
An initial business statement might specify that an approved store order should match the appropriate customer in the operations system. Define the information transferred, acceptable delay and person handling a failure. Have the business approve those boundaries against its actual workflow rather than leaving a developer to infer them from a similar example.
An API is an interface through which software can interact with a system. The integration is the working connection and rules built around it. Having API access does not establish that every necessary operation is available. Review official documentation, account permissions and example access before confirming the proposal’s scope.
Assign ownership before mapping fields between systems
Use an ERP and store integration checklist to identify each field’s source, destination and update direction. If the same customer has different addresses in two systems, deciding which is authoritative is a business question. Copying a field name does not resolve it.
The mapping file records identifiers, required information, empty-value behaviour and necessary transformations. A product code and visible product name are not automatically the same matching key. Agree what happens when a name changes. Check dates, currencies and quantities through representative examples.
An initial transfer of historical records can be different work from ongoing updates. A connection will not automatically convert incorrect source information into accurate data. State the cleanup responsibility and records included in scope. Representative test data can reflect the actual structure without requiring personal customer details for the first assessment.
| Decision | Review question | Delivery record |
|---|---|---|
| Record identity | How do both systems recognise the same object? | Approved matching key |
| Field ownership | Which system is authoritative when values differ? | Field-level update direction |
| Missing information | What happens when required data is absent? | Failure or waiting rule |
| Historical transfer | Which older records will move? | Transfer and cleanup scope |
FROM READING TO A NEXT STEP
Turn one data flow into a testable integration scope
Share the systems, business event and example record so we can identify verification steps and delivery responsibilities.
Define failed transfers and repeated-request behaviour explicitly
Within backend development scope, review unanswered, delayed and repeated operations alongside successful requests. In an illustrative order transfer, a missing response may require another attempt. Preventing that attempt from producing a second order is a separate requirement. Stripe’s official idempotent-request documentation describes a mechanism for its own API; support in another provider must be verified separately.
The business file identifies failure records, retry boundaries and the manual intervention owner. A temporary outage and invalid source data may need different treatment. “We will run it again” is insufficient if the team cannot establish which records have already completed.
Make unsuccessful records visible. Operations should know which transaction is waiting, what needs correction and whether another attempt is appropriate. Keep the information required for investigation without unnecessarily copying personal data into general monitoring tools. A stop or recovery decision belongs in integration design as well as the normal successful path.
Operation status
Separate completed, waiting and intervention-required records. An enabled automation is not evidence that the business transaction completed.
Repeat boundary
Describe the expected outcome if the same event arrives again. Verify the provider mechanism and local handling through an actual test.
Operational intervention
Identify the team that investigates an error and the condition for another attempt. Define the record and permissions needed for that decision.
Choose a connector, automation platform or custom integration around behaviour
Within marketing automation, a ready-made connector may cover a basic flow. Do not select it simply because both application logos appear in a tool directory. Verify the information, direction, failure handling and account scope required. If an event or field is unavailable, assess another method.
Custom development can be suitable where more detailed control is required, and also creates maintenance and monitoring responsibilities. A visual workflow platform does not resolve business rules and failures automatically. Both methods need example-record verification and a handover file.
Real-time delivery is not compulsory for every process. The business should state an acceptable delay for inventory or order information. A daily reporting transfer and a post-payment operation may have different timing needs. Evaluate that requirement alongside provider limits, cost and operations. Define the necessary behaviour before selecting a tool or changing systems.
Test the integration through representative records and acceptance conditions
A delivery and release process can support controlled transition to production. Confirm whether the provider offers a test environment or account. If it does not, approve a bounded way to test the required examples. The operational consequences of tests creating real orders or payments must be clear.
An acceptance file may cover an initial record, update, missing information, repeated event and connection interruption. For each, state the expected destination record and verification method. At go-live, agree the starting data, activation moment and person managing possible overlaps.
A developer observing a successful response is not identical to business acceptance. Verify that the appropriate record appears in the destination and that the relevant team can use it. Keep the limits of the tested journey in the handover document. Operation types that have not been verified should not be treated as accepted merely because one example works.
Assign the integration owner for the operating period after launch
Where multiple connections or legacy systems are involved, technical leadership support can clarify ownership and priorities. The owner should not remain only the person who wrote the first version. Identify the team reviewing provider changes, managing access and deciding how to handle failures.
The maintenance note lists connected systems, documentation sources, monitoring boundaries and change review. Explain how the connection is checked after an account or credential change. Do not place passwords or secret keys in open working documents; manage the access method separately. Data retention and use follow the company’s relevant policies. Creating a connection is not a legal-compliance guarantee.
For an initial Prix discussion, share the systems, required event, representative record, API documentation and failure-handling owner. Scope can begin by verifying one important journey. This turns an undefined request to make systems communicate into a testable engagement with a clear handover and maintenance responsibility.
BEFORE YOU DECIDE
Frequently asked questions
Can an integration be built immediately if an API exists?
Verify the required operations, account access and representative example first. An API does not establish support for every field or event. Scope follows documentation and test findings rather than an automatic compatibility or delivery-time promise.
Do we need two-way synchronisation?
Not for every process. Identify the authoritative system for each field. Unnecessary updates in both directions can create conflicting decisions. One-way transfers or separate event directions should reflect approved data ownership.
Is repeating a failed request safe?
It depends on the provider mechanism and implementation controls. Test that the same operation does not create duplicate records. One provider’s idempotency support cannot be assumed for another. Define retry conditions, boundaries and the manual intervention owner.
Can an automation platform replace custom code?
It can be an option when it supports the required behaviour. Review fields, events and failure handling. A visual platform does not remove business-rule or maintenance responsibilities. Decide around actual scope, cost and sustainable ownership.
Is historical data transfer the same integration task?
It may need a separate scope. Cleanup, matching and an initial transfer involve different checks from ongoing new-record processing. State which older records are included and how missing information is handled before confirming the proposal.
What should we provide for an initial discussion?
Share system names, the business event, a representative record, official API documentation and failure owner. Do not include secret keys or personal customer data in the first explanation. Access methods are agreed separately around the task and role.
LET’S DEFINE THE SCOPE
Turn one data flow into a testable integration scope
Share the systems, business event and example record so we can identify verification steps and delivery responsibilities.
Discuss integration scope