Payments that do not match orders
A customer is charged but the order is not confirmed, or an order is marked paid when the payment actually failed.
Custom Software · Integrations
Third-party integration services built to cope when the other side fails
We connect your website, app or ERP to the external services your business depends on (payment gateways, couriers, SMS, accounting, marketplaces) and build in the retries, monitoring and reconciliation that keep data consistent.
What is Third-Party Integrations?
Third-party integration services connect your software to external platforms you do not control, such as payment gateways, courier and shipping providers, SMS and messaging services, accounting software, ERPs and marketplaces. The work involves understanding each provider's API, mapping data between systems, handling webhooks and authentication, and planning for timeouts, duplicates and outages. A reliable integration also includes reconciliation, so you can check that both systems agree.
An integration that works in a demo is easy; one that works every day for years is not. External APIs time out, send the same webhook twice, change fields between versions and go down at the worst moment. Without idempotency, retries and reconciliation, the result is double charges, missing shipments and orders that exist in one system but not the other. These failures are usually found by customers or accountants, long after they happen.
What goes wrong when systems are connected badly
Duplicate or lost events
Webhooks arrive twice, out of order or not at all, and the integration has no way to notice.
Provider changes and outages
An API version is retired or a provider goes down, and the integration fails silently.
Manual copy-paste between systems
Staff re-enter orders into courier portals or invoices into accounting because the systems are not connected.
Our Third-Party Integrations service
Integration assessment
Review of each provider's API, sandbox, limits and documentation quality, with a data-mapping plan and a list of risks before build.
Payment gateway integration
Checkout, refunds, payment status webhooks and settlement reports, using the provider's hosted components to keep card data off your servers and reduce PCI DSS scope.
Courier & logistics integration
Booking shipments, printing labels, tracking updates and cash-on-delivery settlement with local and international couriers.
Accounting & ERP sync
Customers, invoices, payments and stock synchronized with accounting software or ERPs such as Odoo, with clear rules for which system owns which data.
Messaging & notifications
SMS, WhatsApp Business and email for OTPs, order updates and reminders, with delivery status tracking.
Monitoring & reconciliation
Retry queues, failure alerts, sync logs and reconciliation reports that compare records across systems.
Included capabilities
- Webhook receivers with signature verification
- Idempotent processing of duplicate events
- Retry queues with backoff
- Polling fallback for missed webhooks
- Field mapping and data transformation
- Sync logs searchable by record
- Daily reconciliation reports
- Alerts on repeated failures
- Sandbox and production credential separation
What Third-Party Integrations changes for your business
No more re-keying
Orders, shipments and invoices flow between systems instead of being typed twice.
Fewer payment disputes
Idempotent, verified payment handling helps prevent double charges and unconfirmed orders.
Problems found early
Alerts and reconciliation usually surface mismatches before customers or auditors do.
Freedom to switch providers
A clean integration layer makes changing a courier or gateway a contained piece of work.
Where it makes the biggest difference
E-commerce checkout and fulfillment
Payment confirmed, order created in the ERP, shipment booked with the courier and tracking sent to the customer, automatically.
Cash-on-delivery reconciliation
Courier settlement reports matched to orders so finance knows which payments have actually been received.
Accounting synchronization
Invoices and payments from your app posted to accounting software without manual re-entry.
Customer notifications
OTPs, order updates and appointment reminders sent by SMS or WhatsApp from your own system.
From system inventory to monitored integration
Failure scenarios are tested in the sandbox before production credentials are ever used.
Inventory
List every system to connect, what data flows in which direction and which system owns each record.
Assess the APIs
Read documentation, test sandboxes and note limits, authentication methods and webhook support.
Design the flows
Data mapping, event handling, error paths and reconciliation rules written down.
Build & sandbox test
Implement against sandbox environments, including failure scenarios like timeouts and duplicates.
Go live carefully
Switch to production credentials with close monitoring and a rollback plan.
Monitor & maintain
Watch error rates, reconcile regularly and update the integration when providers change their APIs.
What it connects to
Third-Party Integrations
- Payment gateways and digital wallets
- Local and international courier services
- SMS and WhatsApp Business
- Accounting software
- Odoo and other ERPs
- Shopify, WooCommerce and marketplaces
- Banking and statement feeds
- Maps and address validation
Built with
Webhooks, polling or both?
| Criterion | Webhooks | Polling | Webhooks + polling fallback |
|---|---|---|---|
| Timeliness | Near real time | Delayed by the poll interval | Near real time |
| Handles missed events | No, unless provider retries | Yes | Yes |
| Load on provider API | Low | Higher | Low to moderate |
| Best fit | Providers with reliable, signed webhooks | Providers without webhooks | Payments and other critical flows |
Security, quality and scale
Credential management
API keys and secrets stored in a secrets manager or environment configuration, never in source code.
Webhook verification
Incoming events are verified by signature or token before they are processed.
Minimal data sharing
Only the fields each provider needs are sent, and card data stays within the payment provider's components.
Handling volume spikes
Queues absorb bursts of events and respect provider rate limits during sales or peak seasons.
What working with us looks like
Failure paths designed up front
We plan for timeouts, duplicates and outages before the happy path is built.
Local and international providers
We integrate local Pakistani payment gateways, couriers and SMS providers as well as global services, wherever they offer a usable API.
ERP and accounting know-how
Because we implement Odoo, we understand how integrations affect stock, invoicing and the general ledger.
Integrations we can maintain
We document every flow and can keep the integration updated as providers change their APIs.
What it costs
Fixed-price packages with the scope written down, paid stage by stage. Your project goes live once it's fully paid.
Related services, technologies and industries
Sources and further reading
Official documentation and guidance if you want to read more about this topic.
Third-Party Integrations: questions we hear most
Which payment gateways can you integrate?
We can integrate most payment gateways that offer a documented API, including international providers and local Pakistani gateways and wallets. We review the provider's API and sandbox first and tell you about any limitations before building.
What is the difference between API development and third-party integration?
API development means designing and building your own API for others to use. Third-party integration means connecting your systems to someone else's API, such as a payment gateway, courier or accounting tool, and handling its quirks, limits and failures.
What happens if the third-party service goes down?
Requests are queued and retried with backoff, and alerts are raised if failures continue. Once the service recovers, queued work is processed and reconciliation checks that nothing was lost.
Can you integrate a provider with poor or no API documentation?
Sometimes. We test the provider's sandbox and actual behavior, and in some cases file exchange or scheduled imports are more reliable than an API. We will tell you honestly if an integration would be fragile.
Who maintains the integration when the provider changes its API?
Integrations need maintenance as providers retire versions or change fields. We can maintain them under a support arrangement, or hand over documentation so your own team can.
What affects the cost of a third-party integration?
Cost depends on the number of providers, the quality of their APIs and sandboxes, how many data flows and directions are involved, and the reconciliation and monitoring you need.
Next step
List the systems you need connected
Tell us which gateways, couriers, accounting tools or platforms you use. We'll check their APIs and outline how the integration should work.