PUT 
                                                         /api/cloud/1.0/actions/instances/{id} 
                                                    
                                                    Updates an action service instance.
Warning: For PUT requests, you must specify application/json in the Content-Type header. If the Content-Type header is not included, data persisted in Eloqua will be corrupted, resulting in your App not functioning correctly.
URL parameters
| name | type | description | 
|---|---|---|
| id | GUID | Unique identifier for that service instance | 
Request Body
| name | type | description | 
|---|---|---|
| requiresConfiguration | boolean | 
 | 
| recordDefinition | Dictionary of strings | Defines the mapping between your fields and Eloqua's fields | 
Example
Update the record definition and configuration setting of the action service instance with GUID 7b95fe48-6598-43e8-8fd1-dcb40cf83ef6:
PUT /api/cloud/1.0/actions/instances/7b95fe48-6598-43e8-8fd1-dcb40cf83ef6
{
    "recordDefinition": {
        "ContactID": "{{Contact.Id}}",
        "EmailAddress": "{{Contact.Field(C_EmailAddress)}}"
    },
    "requiresConfiguration": true
}