Salesforce Custom API Integration by Alpha Expansion
Salesforce API Integration01Events, not polling02Bulk loads handled03Least-privilege accessBook a call

Salesforce Custom API Integration

TWO SYSTEMS,ONE CUSTOMERRECORD

We connect Salesforce to your own applications and to your ERP through its APIs, so accounts, orders and service records agree across systems without a person carrying them between screens.

Events, not pollingBulk loads handledLeast-privilege access
01
Events, not pollingDesigned around how your team already works.
02
Bulk loads handledDesigned around how your team already works.
03
Least-privilege accessDesigned around how your team already works.
01Our Approach

Salesforce holds the relationship and other systems hold the transactions, and an integration earns its keep by making both visible in each place.

02Overview

Salesforce joined to the rest of your systems

  • 01Events, not polling
  • 02Bulk loads handled
  • 03Least-privilege access

Salesforce custom API integration connects your org to software that has no packaged connector, most often a product you built or an ERP with its own conventions. We use the REST and Composite APIs for individual records, Bulk API for large volumes and platform events or change data capture to learn what changed, with a service outside Salesforce that maps, queues and retries.

It suits organizations where opportunities are retyped as orders, where service agents cannot see deliveries or invoices, or where a customer-facing application must read and update Salesforce safely. Every org is customized. Validation rules, flows, triggers and sharing settings all react to the data an integration writes, so we test against a sandbox copy of your real configuration instead of assuming a standard one.

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03What We Do

Capabilities, End to End

01
Object and field mapping

Standard and custom objects, record types, picklists and lookups are mapped to your system's records, using external identifiers so that the same record is always found again.

02
Direction and ownership

We record which system may create and change each object. Commonly Salesforce owns accounts and opportunities while the ERP owns orders, invoices and credit status.

03
External client app access

The integration authenticates through an external client app with an OAuth flow suited to servers, as a dedicated user whose permission set exposes only the required fields.

04
Error handling and queue

A record blocked by a validation rule, a trigger or a locked row is stored with the message Salesforce returned, so an administrator can fix the cause and replay it.

05
Bulk and retry logic

Large loads run through Bulk API in batches, single writes use upsert on an external identifier and retries therefore update a record instead of duplicating it.

06
Limit and event monitoring

Daily API consumption, event delivery, queue length and failure counts are tracked and alerted on, so the org's allocation is never exhausted without warning.

04In Production

What It Looks Like When It Ships

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API key rotated - prod
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Invoice #1042 paid
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Events, not polling
Bulk loads handled
Least-privilege access
Account viewOrder flowBlocked recordsAPI allocation
05What You Receive

Handed Over, Ready to Run

SCROLL
01
Object mapping with identifiers
02
Ownership and conflict rules
03
Integration service with source code
04
Opportunity to order flow
05
Permission set for integration
06
Replayable error queue
07
API allocation dashboard
08
Runbook and admin handover
06How It Runs

From Kickoff to Launch

01
Study the org
02
Design the contract
03
Build and test
04
Deploy with care
01
Study the org

We review objects, automation, sharing and existing integrations in a sandbox, since a flow or trigger that fires on our writes can change the outcome completely.

02
Design the contract

Mapping, identifiers, ownership and the events that start each flow are documented and then agreed with your Salesforce administrator and the owners of the other system.

03
Build and test

The service is built against a full or partial sandbox, then exercised with realistic volumes to confirm that automation, row locking and API allocation hold up.

04
Deploy with care

Configuration moves to production through your normal change process. Flows are enabled one at a time, and each is watched for a period before the next begins.

07Technology

The Stack We Use

Salesforce sideREST and Composite APIsBulk API 2.0Platform eventsChange data captureIntegration serviceNode.jsTypeScriptPostgreSQLMessage queuesSalesforce sideREST and Composite APIsBulk API 2.0Platform eventsChange data captureIntegration serviceNode.jsTypeScriptPostgreSQLMessage queues
Your systemsREST and SOAP servicesERP interfacesEvent streamsDatabasesOperationsAllocation trackingAlertingReplay toolsAudit logYour systemsREST and SOAP servicesERP interfacesEvent streamsDatabasesOperationsAllocation trackingAlertingReplay toolsAudit log
08Who It Is For

Built for Teams Like Yours

FLAGSHIP
Salesforce and your other systems disagree daily

A won opportunity is rekeyed as an order somewhere else. Agents cannot see whether an invoice is paid. Your own application keeps its copy of customers, and the two drift. Earlier scripts fail quietly whenever an administrator adds a validation rule.

Opportunities becoming ERP orders
Invoices visible to service
Customer portals on Salesforce data
Product usage on accounts
Data moved after mergers
Replacing fragile scripts
09Questions

What buyers ask before they start

If yours is not here, ask us directly. The first conversation is free and useful whether or not we work together.

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An edition that includes API access, a sandbox to build against and an administrator who can create an external client app and a permission set. Salesforce has restricted the creation of new connected apps and recommends external client apps instead, so new work uses those. Each org also has a daily API request allocation tied to its licences, which we check against your expected volumes.

Yes. When an opportunity closes, the integration checks that the account exists in the ERP with valid billing details, creates it if necessary and then creates the order from the opportunity's products. The ERP's order number, fulfilment status and invoices return to Salesforce. Products and price books are fed from the ERP beforehand, so that what was quoted can actually be ordered.

Usually outside for the moving of data and inside for reacting to it. Code within Salesforce runs under strict execution limits and is awkward for long jobs, retries and large volumes. A separate service handles those comfortably and keeps credentials for other systems out of the org. Inside Salesforce we add only light pieces, such as an event that announces a change.

Sometimes. If your organization already runs an integration platform, building on it keeps skills and monitoring in one place, and we can work that way. A packaged connector suits a standard ERP used in a standard way. Custom integration is the right tool for software you built, unusual objects, strict ownership rules or volumes that make per-task pricing uneconomic.

By testing against it. Every write from the integration can set off validation rules, flows and triggers, so we develop in a sandbox that mirrors production and run the full set of scenarios there. Where a rule should not apply to integration traffic, the administrator decides and documents the exception. After launch, blocked records appear in the queue with the exact message, not in silence.

10Related services

Often built together

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Alpha Expansion is a premium digital product and engineering studio specializing in React development, Next.js development, full-stack development, mobile app development, UI/UX design, and 3D interactive experiences.

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