Guidance

Self Assessment generic technical specifications (2016)

Returns technical specifications for Self Assessment Online software developers.

• From: HM Revenue & Customs
• Published: 16 October 2015
• Last updated: 13 April 2016
  Show all updates

  1. 13 April 2016

     Attachment recognition version 1.0 (10 February 2016) file has been added to the page.

  2. 16 October 2015

     First published.

Documents

Transaction Engine: Support for software developers

https://www.gov.uk/government/collections/government-gateway-support-for-software-developers

How to use the test service version 1.0 (5 October 2015)

PDF, 177 KB, 7 pages

Non form validation rules version 1.0 (5 October 2015)

PDF, 210 KB, 12 pages

HMRC(IR)mark: support for software developers

https://www.gov.uk/government/collections/hmrcirmark-support-for-software-developers

Test in live information version 1.0 (5 October 2015)

PDF, 133 KB, 2 pages

Acceptable characters version 1.0 (5 October 2015)

PDF, 136 KB, 1 page

Copy declaration version 1.0 (5 October 2015)

PDF, 115 KB, 2 pages

Attachment recognition version 1.0 (10 February 2016)

169 KB

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Details

Returns technical specifications for software developers working with the Self Assessment Online service.