As a sharing economy platform, there are some technical requirements that you need to meet. For questions about the technical requirements, please contact the Tax Agency at DEL@sktst.dk or on +45 72 38 02 10.
Technical requirements:

1)    Web service and URL structure (platformId, filingReference, etc.)
2)    Payload - JSON Schema
3)    Specification of headers
4)    Use of certificate
5)    Use of unique identification code

See more in appendix 1 - Technical requirements