Attachments look simple from a user perspective, but they can add meaningful complexity to an electronic invoicing rollout. Teams need to decide what can be attached, how it is validated, and how support should troubleshoot missing or rejected files.
Attachment handling questions to settle early
Before launch, decide:
- which attachment types are allowed
- when attachments are required
- how size or format limits are enforced
- what status users see when attachment handling fails
These questions shape both the product experience and the support model.
Why attachments create extra risk
Attachments often come from different systems than the main invoice data. That means failures can happen in more than one place:
- source document generation
- mapping and bundling
- validation
- downstream processing
Without clear ownership, these issues are difficult to resolve quickly.
A better pattern
Treat attachment handling as part of the document workflow, not as a small side feature. It should have the same visibility, validation discipline, and support readiness as the core invoice payload.
For adjacent implementation topics, continue with Mapping ERP data to Peppol without chaos and What a Peppol access point actually does.