Self Assessment technical specifications for software developers (2018)
Use this guidance for support if you're a software developer working with the Self Assessment Online service.
Documents
Details
These documents are technical specifications for software developers working with the Self Assessment Online service.
Last updated 6 September 2018 + show all updates
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Non form validation rule document updated.
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Attachments recognition version 1.0 has been added to the page.
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First published.