Electronic invoices are mandatory for many organizations: XRechnung for German public-sector customers, ZUGFeRD and similar formats increasingly in B2B. Goal: less manual entry, fewer errors, shorter cycle times.

XRechnung delivers structured XML per EN 16931. ZUGFeRD combines machine-readable XML with a PDF view for people and systems. Both need intake, validation, assignment, and approval workflows.

In ERP, the flow should be end-to-end:

1. Receive invoice and link to the business case (PO, goods receipt, project)
2. Validate amounts, tax, and references
3. Approve and prepare posting in finance
4. Store audit-ready on the record

Side tools beside ERP create media breaks and complicate audits. Nuclos maps e-invoicing into existing order and finance processes, including finance integrations.

Configuration and release details: Nuclos wiki: XRechnung and ZUGFeRD.

Before rollout: which formats suppliers send, approval roles, and deadlines. A focused 48h prototype can make invoice intake tangible before a full project.

German version: XRechnung und ZUGFeRD im ERP.