UNE - Spanish national standards

Electronic invoicing - Part 11: e-Receipt syntaxes (Endorsed by Asociación Espanola de Normalización in March of 2026.)

Available languages: English

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Electronic invoicing - Part 13: Functional specification and guidance for the eInvoice Registry of CIUS and Extensions (Endorsed by Asociación Espanola de Normalización in July of 2026.)

Available languages: English

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Electronic invoicing - Part 2: List of syntaxes that comply with EN 16931-1

Available languages: English, Spanish

Available design: electronic design (pdf)

Electronic invoicing - Part 3-2: Syntax binding for ISO/IEC 19845 (UBL 2.1) invoice and credit note (Endorsed by Asociación Espanola de Normalización in September of 2020.)

Available languages: English

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Electronic invoicing - Part 3-3: Syntax binding for UN/CEFACT XML Industry Invoice D16B (Endorsed by Asociación Espanola de Normalización in September of 2020.)

Available languages: English

Available design: electronic design (pdf), Print design

Electronic invoicing - Part 3-4: Syntax binding for UN/EDIFACT INVOIC D16B (Endorsed by Asociación Espanola de Normalización in July of 2020.)

Available languages: English

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Electronic invoicing - Part 5: Guidelines on the use of sector or country extensions in conjunction with EN 16931-1, methodology to be applied in the real environment (Endorsed by Asociación Espanola de Normalización in November of 2025.)

Available languages: English

Available design: electronic design (pdf), Print design

Electronic invoicing - Part 7: Methodology for the development and use of EN 16931-1 compliant structured Core Invoice Usage Specifications (Endorsed by Asociación Espanola de Normalización in July of 2020.)

Available languages: English

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Electronic invoicing - Part 9: VAT reporting and gap analysis with current eInvoicing standardization deliverables (Endorsed by Asociación Espanola de Normalización in February of 2026.)

Available languages: English

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Animal and vegetable fats and oils - Determination of polymerized triacylglycerols by high-performance size-exclusion chromatography (HPSEC) (ISO 16931:2009)

Available languages: English, Spanish

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