Universal Business Language, or UBL, is an open XML standard for structured business documents such as orders, invoices and shipping notices. It provides common data models that systems can exchange and validate.
Which documents can UBL represent?
- Catalogs and quotations
- Purchase and sales orders
- Despatch and receipt advice
- Invoices and credit notes
- Transportation and procurement messages
Why use structured documents?
Structured fields can be validated and processed without manually reading a PDF. They improve automation only when parties agree on identifiers, code lists and business rules.
UBL vs. PDF invoice
A PDF presents information for people. A UBL document represents data for systems. An invoice can include both a human-readable rendering and a structured UBL payload.
What is required for implementation?
Define the UBL version, document profile, mandatory fields, code lists, identifiers, transport channel and validation rules. Local e-invoicing networks may use a constrained profile.
How should errors be handled?
Validate syntax and business rules, return useful error messages, preserve the original message and prevent duplicates. Successful file receipt does not prove business acceptance.
