Nigeria buyer guide
E-Invoicing Integration Checklist for Nigerian Businesses
The hardest part of an e-invoicing project is often not the API call itself. It is making sure invoice data, business rules, responsibilities and exception handling are clear before integration begins.
1. Identify every system that creates or changes invoice data
Document where customer, product, tax, pricing and payment information originates. Include spreadsheets and manual approval steps, not just the main ERP.
- ERP or accounting platform
- POS or billing system
- CRM or customer master
- Product and tax configuration
- Manual approval or adjustment steps
2. Define the invoice data mapping
Create a field-level mapping between the source systems and the structured invoice payload. Resolve ownership for missing or inconsistent values before development.
- Customer identifiers
- Invoice dates and references
- Line descriptions and quantities
- Tax categories and totals
- Credit-note or correction references
3. Plan validation before submission
A reliable workflow checks required fields and calculations before sending data downstream. This reduces avoidable rejection and support work.
4. Design status, exception and retry handling
Teams need to know what happened after an invoice was submitted. Define how acknowledgements, failures, corrections and retries are surfaced to finance and support users.
5. Include reconciliation and audit visibility
Connect submission status back to internal records so finance teams can reconcile what was generated, submitted, accepted, corrected or failed.
Need help implementing this?
See the relevant GomuTech service or discuss your requirements with the team.