Retrieves a list of standard objects and custom objects that are available for use in MASTER_DETAIL fields.
 Because some objects cannot be linked to others with a Master/Detail relationship, you must specify the object to which you are currently planning to add a relationship when you send this request. This request should only return a list of valid objects that can be successfully linked to this object.
 Endpoint
 https://api.neoncrm.com/neonws/services/api/customObject/listMasterDetailObjects
 Request
 https://api.neoncrm.com/neonws/services/api/customObject/listMasterDetailObjects?userSessionId=[session id]&objectApiName=Test_Custom_Object_c 
 Response
 { "listMasterDetailObjectsResponse": { "operationResult": "SUCCESS", "responseDateTime": "2017-05-24T20:52:40.216+0000", "masterDetailObjects": { "masterDetailObject": [ { "id": "1", "name": "account_user" }, { "id": "8", "name": "contact_activity" }, { "id": "2", "name": "Custom_Accounts_c" }, { "id": "11", "name": "donation" }, { "id": "14", "name": "event_registration" }, { "id": "5", "name": "Grants_and_Campaigns_c" }, { "id": "26", "name": "membership_listing" }, { "id": "14", "name": "New_Obj_c" }, { "id": "12", "name": "Org_Visitation_c" } { "id": "34", "name": "proposal" }, { "id": "38", "name": "solicitation" } ] } } }
 Request Parameters
    | Parameter | Required | Description | 
    | objectApiName | Required | This is the token used to identify the Custom Object when accessing it from the API. | 
  
 Response Parameters
    | Parameter | Description | 
    | masterDetailObjects.masterDetailObject.id |  | 
  | masterDetailObjects.masterDetailObject.name |  | 
  
 Error Codes
    | Code | Text | Description | 
    | 20001 | Object API name is required. |  | 
  | 20002 | Object API name is invalid. |  | 
  | 20020 | Object is active. |  | 
  | 20024 | Object validator name is required. |  | 
  | 20025 | Object validator error message is required. |  |