02ERP · Integration
ERP integration and reconciliation
Keeping operational systems and the ERP in agreement, from the first customer record to the final financial entry.
- My role
- Senior Software Engineer. Integration APIs, data mapping and reconciliation flows.
- Capabilities
- System integration
- API design
- Data mapping
- Asynchronous processing
- Reconciliation
- Error handling
- Operational systemleads, installations, inventory
- Integration APIvalidation and mapping
- Queueretries without blocking users
- ERPthe financial record
- Reconciliationboth sides agree
The problem
Operational teams work in their own systems: customer onboarding, installations, inventory. Finance works in the ERP. When the two disagree, someone has to find out which one is wrong, usually by hand and usually late.
Integration work is less about moving data and more about making sure both sides describe the same reality, including when one of them is slow, unavailable or rejects a record.
Approach
- One mapping, owned in one place. The translation between operational records and ERP structures lives in a dedicated integration layer instead of being scattered across features.
- Validate before sending. Records are checked against what the ERP will accept before they leave, so failures are caught where they can still be fixed.
- Asynchronous where it helps. Work that depends on an external system is queued, so users are not blocked by it and transient failures can be retried.
- Make disagreement visible. Reconciliation compares both sides and surfaces mismatches as data, not as a surprise at month end.
Why it matters
An integration that works on the happy path is easy. One that a finance team can trust needs explicit handling for every way two systems can drift apart.