Support for activity parties while creating new activity type entities like email, appointment etc....

While creaing new appointment , the DRB Editor doesn't allow selection of appointment_activity_parties Web API supports one to many relationship activity parties entities included in the web API call

see the example here

https://xrmdynamicscrm.wordpress.com/2020/06/18/dynamics-crm-365-web-api-add-required-peopleactivity-party-to-an-appointment/

{
    "scheduledstart": "2017-05-18T09:00:00Z",
    "scheduledend": "2017-05-18T09:30:00Z",  
    "subject": "subject title",  

    "appointment_activity_parties": [
        {      
            "participationtypemask": 5,      
            "partyid_contact@odata.bind": "/contacts(xxxxxxx)"    
        },    
        {      
            "participationtypemask": 5,      
            "partyid_systemuser@odata.bind": "/systemusers(xxxxx)"    
        }  
    ]
}

similarly while creating new email activity the editor should allow the selection of activity parties like https://community.dynamics.com/blogs/post/?postid=f324587f-6069-425c-85b9-df5f487a010b https://www.cloudfronts.com/blog/d365-enterprise/d365-general/creating-an-email-activity-in-ms-crm-through-webapi/

{
    "description" : "Email Created",  ///Email Body
    "regardingobjectid_account@odata.bind" : "/accounts(69C38067-EDB7-E811-A961-000D3A363C81)",
    "subject" : "Test Email Creation", 
    "email_activity_parties" : [
        {
            "partyid_systemuser@odata.bind" : "/systemusers(CED2E02D-188E-4AA8-B6E2-D746E9B370C1)",
            "participationtypemask" : 1  ///From Email
        },
        {
            "partyid_account@odata.bind" : "/accounts(69C38067-EDB7-E811-A961-000D3A363C81)",
            "participationtypemask" : 2  ///To Email
        }]
}

Reference may be helpful

https://learn.microsoft.com/en-us/power-apps/developer/data-platform/webapi/reference/activityparty?view=dataverse-latest

https://learn.microsoft.com/en-us/dynamics365/customerengagement/on-premises/developer/activityparty-entity?view=op-9-1

GuidoPreite / DRB

Support for activity parties while creating new activity type entities like email, appointment etc.... #24