# MessageDefinition

## Get FHIR r4 message definitions

 - [GET /site/{siteId}/fhir/message-definition](https://docs.heydonto.com/apis/fhir/openapi/messagedefinition/fhirmessagedefinitioncontroller_getmessagedefinitions.md)

## Create FHIR r4 message definition

 - [POST /site/{siteId}/fhir/message-definition](https://docs.heydonto.com/apis/fhir/openapi/messagedefinition/fhirmessagedefinitioncontroller_createmessagedefinition.md)

## Get FHIR r4 message definition by ID

 - [GET /site/{siteId}/fhir/message-definition/{id}](https://docs.heydonto.com/apis/fhir/openapi/messagedefinition/fhirmessagedefinitioncontroller_getmessagedefinition.md)

## Update FHIR r4 message definition

 - [PUT /site/{siteId}/fhir/message-definition/{id}](https://docs.heydonto.com/apis/fhir/openapi/messagedefinition/fhirmessagedefinitioncontroller_updatemessagedefinition.md)

## Delete FHIR r4 message definition

 - [DELETE /site/{siteId}/fhir/message-definition/{id}](https://docs.heydonto.com/apis/fhir/openapi/messagedefinition/fhirmessagedefinitioncontroller_deletemessagedefinition.md)

## Get FHIR r4 message definition history by ID

 - [GET /site/{siteId}/fhir/message-definition/{id}/history](https://docs.heydonto.com/apis/fhir/openapi/messagedefinition/fhirmessagedefinitioncontroller_getmessagedefinitionhistory.md)