STB PDF

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. Original standard UNE-CEN TS 16931-5-2025 in PDF full version. Additional info + preview on request

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Electronic Public Procurement - Architecture - Part 1: Reference Architecture Overview. Original standard UNE-CEN TS 17011-1-2025 in PDF full version. Additional info + preview on request

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Electronic Public Procurement - Architecture - Part 3: Customisation Guideline. Original standard UNE-CEN TS 17011-3-2024 in PDF full version. Additional info + preview on request

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Electronic Public Procurement - Architecture - Part 4: Technical architecture. Original standard UNE-CEN TS 17011-4-2025 in PDF full version. Additional info + preview on request

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Intelligent transport systems - Public transport - Open API for distributed journey planning. Original standard UNE-CEN TS 17118-2024 in PDF full version. Additional info + preview on request

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Intelligent transport systems - eSafety - Part 3: eCall for Coaches and buses. Original standard UNE-CEN TS 17249-3-2018 in PDF full version. Additional info + preview on request

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