ERP INTEGRATION SERVICES

ERP Integration Services for Enterprise Business Systems ERP APIs, Data Mapping & Business Workflows

Custom ERP integration services using C# and .NET to connect ERP systems with existing applications, order management, inventory and shipping workflows. The integration approach is tailored to the available interfaces, business data and processing rules.

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ERP Integration Services for Enterprise Business Systems

ERP

System Integration

C# / .NET

Integration

API

Connectivity

Orders

Business Data

SQL

Data Integration

Example ERP Integration Request and Response

The example below illustrates a possible ERP-to-application transaction using demonstration order data. It shows how an external order reference, customer and item details, and a shipping requirement can be represented in a request, followed by a response containing a processing status and integration reference. Actual request fields, validation rules and processing steps depend on the ERP system, the interfaces it exposes and the business workflow being integrated.

Illustrative ERP Order Request

{
  "externalReference": "DEMO-ORDER-001",
  "customer": {
    "customerCode": "DEMO-CUSTOMER-001"
  },
  "items": [
    {
      "sku": "DEMO-SKU-001",
      "quantity": 2,
      "unitPrice": 49.95
    }
  ],
  "shipping": {
    "required": true,
    "address": {
      "country": "DE",
      "postalCode": "12345"
    }
  },
  "sourceSystem": "ERP"
}

Illustrative Integration Response

{
  "success": true,
  "externalReference": "DEMO-ORDER-001",
  "integrationReference": "DEMO-INTEGRATION-001",
  "status": "Processed",
  "inventoryUpdated": true,
  "shippingRequested": true,
  "message": "ERP transaction processed successfully."
}

C# / .NET ERP Integration

API System Integration

Real-Time Data Exchange

Automated Business Workflows

SQL Database Integration

Scalable Enterprise Architecture

Multi-System Business Integration

Custom Integration Workflows

                            
                                1. Identify the Source Transaction
                            
                                The example request identifies an ERP source, an external order reference, customer information and line-item data so the transaction can be associated with its origin.

                            
                                2. Map Customer and Item Fields
                            
                                Customer codes, SKU values, quantities and prices illustrate the kinds of business fields that an integration may map between an ERP and a connected application.

                            
                                3. Validate the Transaction
                            
                                Validate incoming field values and required business data against rules agreed for the source and destination systems before processing the transaction.

                            
                                4. Represent Order Lines
                            
                                The sample line item demonstrates how a product identifier, quantity and unit price can be included in a structured order payload.

                            
                                5. Carry Shipping Requirements
                            
                                The sample request includes a shipping-required flag and destination fields to illustrate how order data can pass into a connected shipping workflow when needed.

                            
                                6. Return a Processing Result
                            
                                The sample response returns a status and message so the calling application can determine the outcome of the illustrated transaction.

                            
                                7. Associate an Integration Reference
                            
                                An integration reference can associate the source transaction with its result, helping connected applications trace the exchange. The reference format depends on the implementation.

                            
                                8. Trace the Transaction Outcome
                            
                                A production implementation should define how validation failures and external-system errors are recorded and surfaced for investigation. The JSON shown here is illustrative, not a live response.

Custom ERP Integration for Existing Business Systems

Horizon Softwares develops custom ERP integration services using C# and .NET to connect ERP systems with existing business applications. Work begins by identifying the source and destination systems, available interfaces, data ownership and validation rules. Depending on the environment, integration may use supported APIs, application services or approved database access, with system-specific mapping and error handling kept within the integration layer.

1. Define the Data Flow — Identify which system owns each business field, where the data originates and which destination needs it.

2. Agree the Mapping Rules — Define field conversions, required values, identifiers and validation rules before exchanging data.

3. Select the Integration Interface — Confirm the ERP's supported APIs, services or approved data-access methods.

4. Validate Business Transactions — Check source references, customer or product identifiers, quantities and other required fields.

5. Connect Operational Workflows — Exchange the agreed order, inventory or shipping information with the connected applications.

6. Record Processing Outcomes — Return or persist integration references and statuses appropriate to the system design.

7. Diagnose Failed Exchanges — Separate validation, connectivity, authentication and response-processing failures.

8. Test the Integration Scope — Verify representative successful and unsuccessful transactions against the agreed business rules.

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ERP Integration

C# / .NET

API Integration

SQL / Data

Orders & Inventory

Shipping Integration

Synchronization

Automation

ERP INTEGRATION WORKFLOWS

ERP Integration Workflows: APIs, Data Mapping & Synchronization

Integration design depends on the ERP system's available interfaces, data structures and business rules. The examples on this page illustrate common integration patterns; the implementation is tailored to the systems involved.

MODULE

How ERP Integration Connects Business Systems

ERP integration connects an ERP system with the applications that depend on its business data, such as order management, inventory and logistics software. The aim is to define a reliable path for information to move between systems while keeping each system's specific data model and rules within a clear integration boundary.

A typical workflow identifies the source transaction, validates required fields, maps the data into the destination application's model, performs the agreed business processing and returns a result that the calling system can interpret.

Typical flow:

Identify source data → validate → map fields → process business rules → exchange data with the destination system → record the outcome.

ERP Integration Services

C# / .NET Integration

API Connectivity

Business Data Mapping

Order Data Exchange

Inventory Workflows

Shipping Workflows

Integration Statuses

ERP Integration Services using C# and .NET

MODULE

ERP Data Mapping & Transformation

The ERP and the connected application may use different names, formats or structures for the same business concept. A mapping layer translates between those representations and makes the conversion rules explicit.

Depending on the integration scope, mapping may cover customer identifiers, product or SKU codes, order references, addresses, quantities, prices and inventory fields. Required fields, optional values and format conversions should be agreed before data is exchanged.

Keeping these rules in the integration layer makes them easier to review and update without spreading ERP-specific assumptions throughout unrelated application code.

Customer Mapping

Product Mapping

Order Mapping

Inventory Mapping

Address Mapping

Field Transformation

MODULE

ERP API Integration with C# & .NET

Where an ERP exposes supported APIs, dedicated C# and .NET integration services can manage communication between the ERP and the connected application.

Depending on the interface, the integration may need to construct requests, apply the required authentication, serialize data, handle response codes and translate external responses into application-level results.

The specific endpoint, authentication method and supported operations must be verified against the ERP's documentation and the customer's configured environment.

C# / .NET

REST API Integration

Authentication

Request Construction

Response Parsing

Data Transformation

MODULE

ERP Order & Inventory Integration

Order and inventory integration moves the agreed order, product and stock fields between the ERP and connected business applications.

A workflow may validate order references, product codes and quantities before updating the destination system. The source of truth, direction of updates and handling of conflicting values should be defined for each integration.

These decisions help prevent connected applications from applying incompatible assumptions to the same business data.

Order Synchronization

Product Data

Quantity Mapping

Inventory Updates

Business Validation

Cross-System Processing

MODULE

ERP Shipping Integration

ERP shipping integration passes the order and destination information needed by a shipping workflow from the ERP-facing layer into the shipping application.

Depending on the existing systems, that information may include an order reference, customer details, destination address and package or product data. Carrier-specific request construction should remain within the shipping integration where possible, rather than being duplicated in the ERP-facing workflow.

For carrier-specific workflows, see our shipping software development service and the enterprise shipping platform case study. These describe the shipping side of the process that can connect with ERP order data.

ERP Shipping Integration

Order to Shipment

Address Transfer

Product Information

Multi-Carrier Workflows

System Separation

ERP Shipping Integration with Shipping Software

MODULE

ERP Database & SQL Integration

Some integration environments require database-level data access in addition to supported application APIs. Database access should only be used when it is permitted by the ERP vendor and the customer's architecture and security requirements.

Where approved, a .NET integration layer can isolate database-specific queries and mappings from the rest of the application. The implementation needs to account for the existing schema, data ownership and transaction boundaries.

The available access method should be confirmed during discovery rather than assuming direct database access is supported for every ERP.

SQL Server

Database Integration

Existing Data

Data Access

Transaction Processing

Enterprise Applications

ERP Database Integration with SQL Server

MODULE

ERP Data Synchronization & Traceability

Synchronization workflows should make it possible to identify which transaction was processed, what result was returned and which items require investigation.

External references, integration identifiers and processing statuses can help associate a source transaction with its result across connected applications. The exact persistence, retry and reconciliation strategy should be designed around the interface and business requirements.

This gives support teams a clearer way to investigate incomplete exchanges without assuming that every ERP uses the same synchronization mechanism.

Synchronization Status

Integration References

Processing Results

Transaction Tracking

Workflow Monitoring

Operational Visibility

MODULE

ERP Integration Error Handling & Diagnostics

Errors can occur during validation, authentication, data mapping, external communication or response processing. The integration should distinguish these failure stages so the result can be investigated by the right team.

Depending on the system and data sensitivity, useful diagnostics may include a correlation or integration reference, processing status and a sanitized error detail. Credentials and sensitive business data should not be exposed in logs.

The handling strategy should define which errors can be retried, which require correction and how unresolved transactions are surfaced to support users.

Response Validation

Exception Handling

Integration Failures

Request Preservation

Response Preservation

Troubleshooting

Kshitij Mehta - Senior Enterprise .NET Consultant

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