The myHealth@myHands-specific specialisation of the generic Data Syntax Mapping Catalogue ABB. It contains 13 syntax mapping specifications covering all technical formats used in the myHealth ecosystem HL7 FHIR resource types, DICOM imaging, HL7 CDA, and ISO 18013-5 mdoc credentials. These specifications define the conformance requirements for each syntax format used in national and cross-border health data exchange.