What is ERP integration? Definition, methods, benefits and practical examples.
Manual data transfers, conflicting stock levels, isolated software solutions and processes that stall at system boundaries? When different applications do not reliably communicate with each other, data silos, errors and unnecessary effort arise. An ERP integration connects the ERP system with applications, machines, platforms and data sources, so that information can be exchanged automatically and business processes can be managed end-to-end. But what exactly is ERP integration, what integration methods exist, and what should companies pay attention to when implementing it?
1. What is ERP integration? Definition and explanation
ERP integration refers to the technical and procedural connection of an Enterprise Resource Planning system with other applications, platforms, databases, devices or machines. The integration enables automated and controlled data exchange between the ERP system and the connected systems.
An ERP system covers central business areas such as procurement, sales, warehouse, manufacturing, finance and controlling. In practice, however, companies often use additional specialized applications. These include, for example, CRM systems, document management systems, production software, online shops, shipping solutions, CAD- or PDM-systems. Through ERP integration, these applications are connected into a cohesive IT landscape.
ERP integration, however, does not only connect technical systems. It also links the associated business processes. For example, an order from an online shop can be automatically transferred to the ERP. There, availability, price, delivery date and customer data can be checked. Subsequently, follow-on processes in warehouse, shipping, accounting and customer communications can be initiated.
Short definition: ERP integration is the connection of an ERP system with other applications, data sources or machines, so that data can be exchanged automatically and business processes can be managed across systems.
2. Why is ERP integration important?
In many companies the IT landscape grows over years. Individual departments introduce their own solutions, machines provide production data, and external platforms are added. Without a unifying concept, standalone systems and data stores emerge.
Typical consequences of missing or insufficient integration include:
❌ Data must be entered manually multiple times.
❌ Inventories, prices or customer data differ between systems.
❌ Employees transfer information via spreadsheets or emails.
❌ Errors are often only detected in downstream process steps.
❌ Analyses are based on different data states.
❌ Changes in one system reach other applications with a delay.
❌ Responsibilities for data and interfaces remain unclear.
A well-thought-out ERP integration reduces these breaks. It ensures that information flows in a controlled manner between the involved applications and that follow-on processes do not have to be manually triggered with every system change.
The ERP as a central data platform
In an integrated system landscape, the ERP often takes on the role of the central data platform. It brings together information from different areas of the business and makes it available for planning, control and evaluation. Which data should actually be centrally managed in the ERP depends on the respective process.
For customer master data, for example, the ERP or a CRM system can be leading. Design data can originate from a PDM system, while inventories and material movements are managed in the ERP. A clear data ownership is decisive.
3. Which systems can be integrated with an ERP?
In principle, many internal and external systems can be integrated into an ERP landscape. Prerequisites are suitable interfaces, compatible data formats and a clearly defined process.
| System or platform | Typical exchanged data | Example of process benefit |
|---|---|---|
| System or platform CRM system | Typical exchanged data Customers, contacts, offers, activities, orders | Example of process benefit End-to-end process from customer inquiry to order processing |
| System or platform Online shop and marketplaces | Typical exchanged data Items, prices, inventories, orders, shipping status | Example of process benefit Automatic processing of online orders |
| System or platform MES and production systems | Typical exchanged data Manufacturing orders, machine states, times, quantities, feedback | Example of process benefit Linking production planning and actual manufacturing progress |
| System or platform CAD-, PDM- and PLM systems | Typical exchanged data Items, bill of materials, drawings, documents, change statuses | Example of process benefit Transfer of released product data to purchasing and manufacturing |
| System or platform Document management system | Typical exchanged data Documents, metadata, references to processes | Example of process benefit Assignment and archiving of documents to ERP processes |
| System or platform Warehouse management system | Typical exchanged data Inventories, storage locations, picking orders, movements | Example of process benefit Current inventories and coordinated warehouse processes |
| System or platform Shipping and logistics systems | Typical exchanged data Addresses, packaging units, shipping orders, tracking numbers | Example of process benefit Automated shipping processing and status feedback |
| System or platform EDI solutions | Typical exchanged data Orders, delivery schedules, delivery notes, invoices | Example of process benefit Standardized electronic document exchange with business partners |
| System or platform Business intelligence solution | Typical exchanged data Finance, sales, production and logistics data | Example of process benefit Cross-department analyses and dashboards |
| System or platform IoT devices and machines | Typical exchanged data Measurements, machine status, production quantities, faults | Example of process benefit Automatic collection of operating data and current production information |
4. Types of ERP integration
ERP integrations can be distinguished according to which systems and organizational levels are connected.
Horizontal integration
Horizontal integration connects business areas or applications along a process chain. An example is linking sales, procurement, warehouse, manufacturing and accounting. Data move through several corporate divisions without being re-entered at every transition.
Vertical integration
Vertical integration connects different levels within a company. In a manufacturing operation, this can be the connection between ERP, production planning, MES, shop-floor data collection and machine control. The commercial planning is thus more tightly linked to actual production.
Internal integration
Internal integration considers systems within the company. These include, for example, CRM, DMS, PDM, finance, warehouse management and business intelligence.
External integration
In external integration, the ERP is connected to customers, suppliers, logistics partners, banks, authorities, marketplaces or other external platforms. Standardized data formats or EDI procedures are often used.
Point-to-point integration
In a point-to-point integration, two systems are connected directly. This approach may be suitable for a manageable number of applications. With every additional connection, however, the number of dependencies that must be documented, monitored and maintained increases.
Central integration via middleware
Middleware is an intermediary software layer between several applications. It can receive, validate, transform, forward and monitor the processing of data. The involved systems therefore do not need to know every technical peculiarity of the other application.
5. Technologies and methods of ERP integration
For technical ERP integration, various methods are available. The right solution depends, among other things, on the systems involved, the required timeliness, the data volume, and security requirements.
| Integration method | How it works | Suitable for |
|---|---|---|
| Integration method API | How it works Defined programming interface for structured data exchange | Suitable for Modern applications, web services and real-time processes |
| Integration method REST API | How it works Web-based interface, often with structured data formats | Suitable for Cloud applications, portals, mobile solutions and third-party systems |
| Integration method Web services | How it works Standardized communication between applications | Suitable for Cross-system transactions and service calls |
| Integration method Middleware | How it works Central mediation, transformation and monitoring of data flows | Suitable for More complex landscapes with multiple systems |
| Integration method EDI | How it works Electronic exchange of standardized business documents | Suitable for Orders, delivery schedules, delivery notes and invoices |
| Integration method File-based exchange | How it works Transmission of structured files, e.g., CSV or XML | Suitable for Periodic transfers and older systems |
| Integration method Database connectivity | How it works Controlled access to databases or data replication | Suitable for Reporting, analysis and defined integration scenarios |
| Integration method Connectors | How it works Prebuilt connection for specific systems or application groups | Suitable for Standardized integrations with lower development effort |
| Integration method Low-code integration | How it works Configuration of data flows via graphical tools | Suitable for Recurring integrations without extensive custom programming |
Synchronous and asynchronous data exchange
In a synchronous integration, the calling system waits for a response immediately. This method is suitable for processes where information is needed right away, for example an availability check.
In an asynchronous integration, data is handed over and processed independently of the original call. This approach can be useful for large data volumes or processes that do not require an immediate response.
Real-time or time-driven transmission
Not every process requires real-time data. Warehouse availability or production feedback may require fast transfer. Other data can perhaps be synchronized at fixed intervals. The decision should be guided by the business process and not solely by technical feasibility.
6. How does ERP integration work?
An ERP integration consists of several technical and domain-specific building blocks. The exact structure varies by use case, but usually follows a comparable logic.
- An event occurs: An order is created, an item is changed or a manufacturing step is completed.
- The source system provides data: The relevant information is output via an interface, a connector or a file.
- The data are checked: Required fields, formats and business rules are validated.
- The data are transformed: Field names, units or structures are adapted to the target format.
- The target system processes the data: A record is created, updated or assigned to a process.
- The result is logged: Successful and failed transfers are documented.
- Follow-up processes are triggered: For example, a manufacturing order, a shipping order or an invoice is created.
Leading systems and data ownership
For each central data object, it should be defined which system is the leading source. Otherwise, changes can be made simultaneously in several applications and later overwrite each other.
Typical data objects are:
- Item and material master data
- Customer and supplier data
- Prices and conditions
- BOMs and work plans
- Inventories and storage locations
- Orders and delivery dates
- Documents and version histories
Monitoring and error handling
An interface should not only transfer data but also monitor it. Therefore, the integration concept should specify how errors are detected, logged and handled. Also important are retry mechanisms, permissions and clear responsibilities.
7. Benefits of ERP integration
A carefully planned ERP integration can improve the quality and speed of cross-system processes.
Less manual data entry
- ✅ Information is automatically transferred between systems.
- ✅ Duplicate data entries can be reduced.
- ✅ Employees need to transfer data less often from spreadsheets or documents.
Higher data quality
- ✅ Data formats and mandatory fields can be automatically validated.
- ✅ Clear leading systems reduce conflicting data states.
- ✅ Changes can be distributed to connected applications in a controlled manner.
End-to-end processes
- ✅ An event in one system can trigger follow-on processes in other applications.
- ✅ Order, production, warehouse and finance processes can be more tightly integrated.
- ✅ Media breaks between departments can be reduced.
More transparency
- ✅ Departments work on a coordinated information base.
- ✅ Process status and deviations become more traceable.
- ✅ Analyses can include data from multiple parts of the company.
More flexibility
- ✅ Specialized solutions can be connected without giving up central ERP control.
- ✅ New sales channels or platforms can be integrated into existing processes.
- ✅ Standardized interfaces simplify future extensions.
8. Challenges and typical mistakes
ERP integration is not only a technical task. It concerns data, processes, responsibilities, security and long-term maintenance.
Unclear process goals
An interface should not be developed simply because a technical connection is possible. First, it must be clarified which business process should be improved and which information is required for it.
Missing data ownership
If several systems may edit the same information, contradictory data states can easily occur. For each important data object, a leading system should therefore be defined.
Insufficient data quality
An integration transmits not only correct, but also incorrect data faster. Before onboarding, master data, keys, formats and duplicates should be checked.
Too many individual point-to-point connections
Individual direct connections can be sensible for a small system landscape. However, a large number of interdependent interfaces increases the complexity of changes, updates and error analysis.
Lack of monitoring
Without logging, failed transfers may go unnoticed. Monitoring, notifications and clearly defined responsibilities are therefore part of the integration concept.
Inadequate security
Interfaces require an appropriate role and rights concept. Access should be limited to the necessary data and functions. In addition, secure connections, authentication, logging and data protection requirements should be considered.
Dependence on outdated technologies
Older systems may only be connectable via proprietary or file-based methods. Companies should assess whether such integration remains maintainable in the long term or merely postpones modernization needs.
Table of Contents
- 1. What is ERP integration? Definition and explanation
- 2. Why is ERP integration important?
- 3. Which systems can be integrated with an ERP system?
- 4. Types of ERP integration
- 5. Technologies and methods for ERP integration
- 6. How does ERP integration work?
- 7. Benefits of ERP integration
- 8. Challenges and common mistakes
- 9. ERP integration, ERP implementation and data migration
- 10. ERP integration in manufacturing
- 11. ERP integration with Abas as a practical example
- 12. Plan ERP integration and select the right solution
- 13. Trends and future developments
- 14. FAQ: Frequently asked questions about ERP integration
Abas ERP Product Brochure
Would you like to see what the Abas ERP software looks like and discover the features it offers?
Our product brochure provides a detailed overview of all ERP functionalities. From materials management and production planning to project management, every key area is covered and explained in depth.
9. ERP integration, ERP implementation and data migration
ERP integration, ERP implementation and data migration are often confused with one another, but denote distinct tasks.
| Term | Explanation | Typical tasks |
|---|---|---|
| Term ERP implementation | Explanation Introduction and configuration of an ERP system | Typical tasks Process analysis, setup, testing, training and go-live |
| Term ERP integration | Explanation Connecting the ERP system with other applications and data sources | Typical tasks Interfaces, data flows, connectors, monitoring and process automation |
| Term Data migration | Explanation One-time or incremental transfer of data into a new system | Typical tasks Cleansing, mapping, transfer and validation of master and transactional data |
In an ERP implementation, all three areas can come together. The implementation creates the new ERP system, the migration transfers existing data, and the integration continues to connect required applications.
10. ERP integration in manufacturing
In production and manufacturing companies, ERP integration is particularly relevant. There, business planning, design, Materials management, production planning and shop floor must work closely together.
CAD-, PDM- and PLM integration
A connection between product development and ERP can transfer item master data, bill of materials, drawings and change statuses. Released design information is thus available faster for costing, procurement and manufacturing.
MES- and shop floor integration
A MES or shop floor data collection can take production orders from the ERP and return production feedback. This can include quantities, times, machine states or scrap information. The exact data transfer depends on the systems used and the defined scope of integration.
Warehouse and logistics integration
The connection between ERP, warehouse management and shipping supports a coordinated information flow between inventory, picking, packaging and delivery. Inventory changes and order statuses therefore do not have to be manually maintained in multiple systems.
EDI in the supply chain
In integrated supply chains, orders, release orders, delivery notes and invoices can be exchanged electronically. EDI uses agreed structures and formats. This is especially relevant when business partners regularly exchange large volumes of standardized documents.
11. ERP integration with Abas as a practical example
Abas ERP is an ERP solution for the mid-market with a particular focus on production and manufacturing companies. The solution includes, among other things, functions for planning, manufacturing, financial accounting, costing, sales, purchasing, controlling, reporting, warehousing, quality management, production data collection, EDI, document management and production scheduling.
In the area of ERP integration, Abas scores points thanks to its wide range of possibilities to network the IT landscape – because the topic of connectivity and the integration of third-party systems has been firmly anchored in our DNA from the start. Abas provides various tools, connectors and interfaces for this.
Abas Connect
Abas Connect is a graphical integration tool for connecting software and devices to Abas ERP. It can connect, for example, CRM systems, machine controls, warehouse management software, or autonomous systems. The setup and maintenance of the interfaces is done via a graphical interface and follows a low-code approach.
Abas REST API
The Abas REST API is a web interface for real-time data access to Abas ERP. It provides the technical foundation to connect modern applications and external systems to ERP data in a controlled manner.
PDM Connector
The Abas PDM Connector supports connecting PDM systems. The CAD and PDM integration includes the data management of master data, bill of materials and drawings, as well as the bidirectional communication of these data with Abas ERP. This makes it possible to bring product development more closely together with procurement and manufacturing.
DMS Connector
Companies can use the document management available in Abas or connect third-party DMS solutions via the DMS Connector. Documents created in Abas and related index data can be exported. Incoming documents can be linked to records in Abas ERP.
MS SQL Connector
The MS SQL Connector enables flexible and automated export of ERP data. The specific use should be evaluated based on the respective analysis, integration or data exchange scenario.
B2B portal and webshop
Abas also offers a standard webshop based on Shopware with deep ERP integration. Such a connection can align product, customer and order processes more closely with the ERP. Which data and functions are used in the concrete project depends on the configuration.
Cloud ERP and connectivity
In addition to the traditional operating model, Abas offers a Cloud ERP solution. For integration projects, it is crucial that interfaces, permissions, data flows and connected applications are considered in the chosen cloud operating model. The cloud alone does not replace an integration concept, but can form a basis for centrally provided and networked ERP processes.
Why Abas is suitable for integrated manufacturing processes
- ✅ Abas ERP targets mid-sized production and manufacturing companies.
- ✅ Manufacturing, planning, purchasing, sales, warehousing and finance are part of the integrated functionality.
- ✅ Abas Connect supports configuration-based integration of software and devices.
- ✅ The REST API provides access to Abas ERP data via a modern web interface.
- ✅ Standardized connectors support, among other things, PDM, DMS, and database scenarios.
- ✅ EDI, IoT, production data collection and production planning are additional relevant functional areas.
12. Plan ERP integration and select the right solution
A successful ERP integration starts with the process, not with choosing an interface technology.
1. Define integration goals
Companies should specify which problems are to be solved. Examples include fewer manual entries, more up-to-date inventory, end-to-end manufacturing processes or automated order intake.
2. Capture systems and data objects
All involved applications, data sources and responsible persons should be documented. Equally important is an overview of the master and transactional data to be exchanged.
3. Define leading systems
For customers, articles, bills of materials, prices, stock levels and other core data, it should be clearly defined which system serves as the authoritative source.
4. Determine update requirements
It must be clarified whether data should be transferred immediately, event-driven, in short intervals or at defined times.
5. Choose integration method
Depending on the requirement, APIs, connectors, middleware, EDI or file-based procedures may be suitable. Standardized and documented interfaces are generally easier to maintain than numerous individual connections.
6. Create security concept
Permissions, authentication, encryption, logging and data protection must be part of the architecture. Interfaces should only access the data and functions that are actually required.
7. Plan error handling and monitoring
Companies should define before going live how failed transmissions are detected, retried and processed. Responsible persons or teams must be clearly named.
8. Test the integration
Tests should not only check the technical data transfer. Equally important are business processes, edge cases, faulty data, retries and behavior when the target system is temporarily unavailable.
9. Maintain documentation
Data fields, rules, system responsibility, credentials, dependencies and error procedures should be auditable. The documentation must be updated when changes occur.
13. Trends and future developments
ERP integration is evolving from individual interfaces to a strategic integration architecture.
- ✅ API-based integration: Modern applications provide standardized services for data exchange.
- ✅ Low-code integration: Graphical tools simplify configuring recurring data flows.
- ✅ Cloud integration: Cloud ERP, Software-as-a-Service applications and external platforms become more closely connected.
- ✅ IoT and shop floor: Machine data flows more strongly into production planning and business processes.
- ✅ AI-powered analytics: Integrated data create a broader basis for forecasting, anomaly detection and assistive features.
- ✅ Standardized connectors: Pre-built integrations reduce the need for custom development.
- ⚠️ Growing security requirements: With each additional connection, demands on access control, monitoring and data protection increase.
Abas ERP Product Brochure
Would you like to know what the Abas ERP software looks like and which features are included in it?
In the product brochure, all functions are presented and explained in detail. From materials management through detailed planning to project management, no topic is left out.
What is ERP integration?
ERP integration is the technical and procedural connection of an ERP system with other applications, platforms, databases, or machines. The goal is automated, controlled, and traceable data exchange.
What is the difference between ERP integration and ERP implementation?
The ERP implementation refers to the introduction and configuration of an ERP system. The ERP integration connects this system with other applications and data sources. Both tasks can be part of the same ERP project.
What is the difference between an API and an interface?
The interface is the overarching term for a defined connection between systems. An API is a specific form of the programming interface through which applications can call functions or exchange data in a structured way.
What is the difference between an API and middleware?
An API provides a defined access point to a system. Middleware mediates between multiple systems and can forward, transform, and monitor data. Middleware often uses the APIs of the connected applications.
Which systems can be connected to an ERP system?
Typical examples are CRM, online shop, marketplace, MES, PDM, PLM, CAD, DMS, warehouse management, shipping software, Business Intelligence, EDI platforms and machines.
Is ERP integration also worthwhile for SMEs?
Yes. SMEs benefit especially when data are manually transferred today between applications or when there is conflicting information. However, the scope of integration should be aligned with the concrete processes and the economic benefit.
Does every ERP integration require real-time data?
No. The required timeliness depends on the process. Availability checks or machine status may require rapid transmission. Other data can be synchronized on a time-based schedule if necessary.
How do you choose the right integration method?
Important criteria include the systems involved, the data volume, the required timeliness, available standard interfaces, security requirements, maintainability and error handling. The business process should determine the technical decision.
Which data should be integrated first in an ERP integration?
The entry point should focus on a clearly defined process with tangible benefits. Which data are relevant first depends on the use case. Often, integrations involve articles, customers, orders, inventories, bills of materials, or production reports.
How can an ERP integration be secured?
Important measures include a role-based access control concept, secure authentication, encrypted connections, logging, monitoring, and a restriction to the required data and functions.
What integration options does ABAS ERP offer?
Abas mentions, among other things, Abas Connect, the Abas REST API, a PDM Connector, a DMS Connector, an MS SQL Connector, as well as an integrated B2B portal and webshop solution. In addition, connectivity, IoT, EDI and production data capture are part of the listed functional areas.