Is data being entered in two systems because your ERP and your CRM or e-commerce platform don't talk to each other -- creating double-entry work and the errors that come with it?
When an integration between your ERP and another system fails, how long before your team finds out -- and how much data has to be manually reconciled?
An ERP that doesn't talk to your CRM, your e-commerce platform, or your WMS isn't a system of record -- it's another silo with a bigger price tag.
ERP integration connects your ERP to the systems around it -- CRM for customer and order data, e-commerce for online sales, WMS for warehouse operations, payroll for HR data, supplier portals for purchasing, and banking feeds for financial reconciliation. Without integration, data is entered twice -- once in the originating system and once in the ERP -- creating the reconciliation work and the errors that come with manual re-entry.
RaftLabs designs and builds ERP integrations using API-based connections, EDI, and file-based transfer for systems that don't expose APIs. Bidirectional sync with conflict resolution, data transformation between schemas, error handling for failed transfers, and monitoring so integration failures surface to your team before they cause business impact.
Bidirectional sync between ERP and CRM -- orders, customers, and invoices in one place
E-commerce integration creating ERP orders from web sales and pushing fulfilment status back
EDI integration for supplier and retail trading partner connections that require structured data exchange
Integration monitoring with alerting when a sync fails -- so you know before data discrepancies appear in reports
RaftLabs designs and builds ERP integrations -- bidirectional sync between ERP and CRM, e-commerce, WMS, payroll, banking, and supplier systems -- using API connections, EDI, and file-based transfer. Error handling, conflict resolution, and monitoring included. Most ERP integration projects deliver in 6 to 14 weeks at a fixed cost.
The business case for ERP usually rests on having a single system of record. That case collapses when the ERP sits in isolation from the systems that generate the data it's supposed to consolidate. Orders come in through e-commerce but get keyed into the ERP by hand. Customers exist in the CRM but not in the ERP, so invoices have to be created from scratch. Inventory levels are correct in the WMS but the ERP shows yesterday's numbers because the sync runs overnight. The system of record becomes the system everyone works around.
ERP integration engineering is distinct from building the ERP itself. Integration requires understanding two data schemas, mapping between them, handling the cases where they don't align, managing the sequence of operations when transactions depend on prior records existing in both systems, and building the error handling and monitoring that makes the integration trustworthy in production over time. A working integration on day one that drifts into silent failure six months later creates more data reconciliation work than no integration at all.
What we build
CRM integration
Bidirectional sync of customers, contacts, and sales orders between ERP and CRM (Salesforce, HubSpot, Pipedrive, and others). Quote-to-order flow triggering ERP order creation from a won deal in the CRM -- eliminating the manual handoff between sales and operations. Invoice and payment status visible in the CRM without the sales team needing to log into the ERP or ask finance. Sync frequency and conflict resolution configured for your workflow, with the CRM owning contact and activity data and the ERP owning financial records.
E-commerce integration
Order import from Shopify, WooCommerce, Magento, and marketplace platforms into the ERP, triggering the fulfilment workflow from the point of sale without manual order entry. Inventory level push from ERP to e-commerce platforms so stock display reflects actual available inventory -- reducing oversells and the customer service work they create. Fulfilment status and tracking number push from ERP dispatch confirmation back to the e-commerce platform and the customer-facing order status page. Product data sync from ERP master data to e-commerce catalogue for price and SKU management.
EDI integration for trading partners
EDI connections for retail trading partners and suppliers requiring structured data exchange rather than API connectivity. Support for EDI 850 (purchase order), 855 (PO acknowledgement), 856 (advance ship notice), and 810 (invoice) document types, plus additional document types required by specific trading partners. VAN and AS2 connectivity for EDI transport. EDI document translation between the trading partner's specification and the ERP's internal format. Error handling and acknowledgement tracking with alerts when documents are rejected or unacknowledged by the trading partner.
Banking and payment integration
Bank feed integration for automated transaction import into ERP accounts payable and receivable, reducing the manual bank statement entry that consumes finance team time each day. Payment file export in BACS, SEPA, or local bank format from ERP payment runs, eliminating manual payment entry at the bank portal. Payment gateway integration (Stripe, Braintree) for customer payment capture with automatic ERP reconciliation against open AR invoices. Bank statement reconciliation automation matching imported transactions to GL entries and surfacing exceptions for review.
WMS and 3PL integration
Warehouse management system integration for inventory level sync, pick instruction dispatch, and fulfilment confirmation -- ensuring the ERP reflects what the warehouse system knows without manual stock adjustment. 3PL API integration for order despatch instructions and tracking number receipt, so the fulfilment process runs end to end without manual handoffs between systems. Goods receipt confirmation from WMS to ERP inventory so stock is available for planning as soon as it's received and checked. Returns processing workflow from 3PL back to ERP stock adjustment and AR credit note generation.
Integration monitoring and error management
Per-integration health monitoring with success/failure rate and record count tracking over time -- giving your team visibility into integration performance without manually checking each system. Alerting when a sync fails or when record counts deviate from expected ranges, surfacing failures before they cause downstream data problems that are harder to trace. Dead letter queue for failed records with investigation workflow and retry capability. Reconciliation report comparing record counts and key field values between systems after each sync to detect silent failures that don't produce explicit errors.
Have an ERP integration project?
Tell us the systems you need to connect, the data that needs to flow between them, and where manual re-entry creates the most pain. We'll scope it and give you a fixed cost.
Related ERP development services
ERP Software Development -- full ERP capability overview
Manufacturing ERP Software -- manufacturing modules with integration requirements
Finance and Accounting ERP -- finance modules with banking and payment integration
Inventory Management ERP -- inventory modules with e-commerce and WMS integration
Related services
API Development -- API development for systems that need to expose integration interfaces
Business Systems Integration -- broader systems integration beyond ERP
Data Engineering -- data pipelines from ERP to analytics and BI systems
Frequently asked questions
Legacy ERP systems without REST APIs can be integrated through alternative approaches: database-level integration reading from and writing to the ERP database directly (requires schema access and creates risk if the schema is not documented); file-based integration using export/import files in CSV or XML format that most legacy ERPs support; RPA-based integration as a last resort when no programmatic access is available. The right approach depends on what access the ERP vendor allows and what latency is acceptable for the integration. We assess each legacy ERP's integration options during discovery.
Conflict resolution is configured per integration based on the data ownership model. The most common approach is to designate one system as the master for each data type: the ERP owns customer financial data, the CRM owns contact and activity data, and the conflict resolution rule enforces the master's value when both change simultaneously. For bidirectional integrations where either system can legitimately be updated, timestamp-based resolution (last write wins) or human review for flagged conflicts is configured based on the business impact of the data type.
A single point-to-point integration between ERP and one system -- CRM sync or e-commerce order import -- typically takes 4 to 8 weeks. A more complex integration with multiple systems, EDI trading partner connections, and full monitoring typically takes 10 to 18 weeks. Timeline depends on the number of systems, the quality of APIs available, and the complexity of data transformation between schemas.
Failed transfers are handled with transactional patterns where possible -- either all records in a batch transfer or none, preventing partial loads. Records that fail individual processing go to a dead letter queue for investigation and retry rather than being silently dropped. Monitoring alerts fire when failure rates exceed threshold or expected record counts aren't delivered. Every integration includes a reconciliation process -- comparing record counts and key values between systems after each transfer -- to detect silent failures that don't produce explicit errors.