Software developers: enquiries
Email HMRC to get technical information and support if you're a software developer.
Email a technical specification question about HMRC services if you’re a software developer: SDSTeam@hmrc.gov.uk
Get help with:
- technical documentation, for example schema and validation rules
- vendor IDs and testing credentials
- giving feedback or advice during testing
- product recognition
Related content
Basic guide for XML software developers
Register as a Software Developer
HMRC Developer Hub
Updates to this page
Published 14 May 2025