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Documentation overview
Glossary
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EN 16931
E-reporting
C
CIUS
CII
Code list
Credit note
Contract reference
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XRechnung
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XML
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ZUGFeRD
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Factur-X
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UBL
Unit code
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PEPPOL
PEPPOL BIS
Participant ID
PDF/A-3
Payment means
Purchase order (PO)
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Access Point
Allowance / charge
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SMP
SML
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Leitweg-ID
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KoSIT
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Validation
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ViDA
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Business Term (BT)
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Reverse charge
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Tax category
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IBAN
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Document reference
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  3. E-Invoicing Resources
  5. Glossary
  7. Purchase order (PO)

Reference

Purchase order (PO)

Buyer-issued document ordering goods/services, often referenced by an invoice.

Explanation#

Referencing PO numbers helps matching invoices to orders.

Commonly required in enterprise workflows.

This article treats Purchase order (PO) as a practical reference, not just a navigation page. It explains the term or workflow in context, shows why it matters for European e-invoicing, and connects the topic to invoice creation, validation, routing, archiving, and ERP implementation decisions.

Related resources#

Related resources connects Purchase order (PO) with the next useful reference pages and tools. These links are included to support a complete workflow, from understanding Document references to validating or converting the invoice file.

Document references

Related terms#

Related terms connects Purchase order (PO) with the next useful reference pages and tools. These links are included to support a complete workflow, from understanding Document reference and Contract reference to validating or converting the invoice file.

Document reference

Link from an invoice to another document (order, contract, prior invoice).

Contract reference

Identifier linking an invoice to a contract or framework agreement.

Document referenceContract reference
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ExplanationRelated resourcesRelated terms

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