Stamp Duty Land Tax: technical specifications
Technical specifications for Stamp Tax Online software developers.
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Technical specifications for software developers working on the Stamp Tax Online service.
Updates to this page
Published 1 January 2014Last updated 13 November 2024 + show all updates
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Business rules 2.3a has been removed and replaced with Business rules version 2.4a. The Response messages version 4.1a has been replaced with Response messages version 4.2a.
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The Response messages version 4.0a have been replaced with Response messages version 4.1a. Business rules 2.2a has been removed and replaced with Business rules version 2.3a.
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Version 6.0 of the SDLT test case data attachment has been removed. It will now be provided upon request only.
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The Response messages version 3.1 have been replaced with Response messages version 4.0a.
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Business rules version 1.5 has been removed.
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Business rules 1.5 Addendum for First Time Buyers Relief has been removed and replaced with Business rules version 2.2a.
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SDLT recognition process version 1.2 has been removed and replaced with SDLT recognition instructions version 1.0.
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The 'Business rules 1.5 Addendum for First Time Buyers Relief' file has been added.
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Documents about Response messages version 3.0, Business Rules version 1.4 and SDLT baseline schema: 6.1 have been removed from the page.
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SDLT baseline schema: 6.1, Business rules version 1.5 and Response messages version 3.1 have been added.
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SDLT baseline schema: 6.1 has been updated.
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The latest versions of the Business rules, Response messages and SDLT baseline schema have been added.
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The latest version of the 'SDLT test case data’ file has been published.
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The latest version of the 'SDLT valid xml example’ file has been published.
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The latest version of the 'SDLT valid xml example version 1.6’ file has been published.
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The latest versions of the SDLT baseline Schema, business rules and response messages have been added.
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Latest versions of business rules, response messages, how to use the test service, GovTalkHeader/IRheader rules, SDLT recognition process have been published as well as deleting the SDLT additional information document version1.5.
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Latest versions of Business rules and Response messages published.
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Latest versions of Business rules and Response messages published.
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First published.