Indicates whether executions of the service is recorded in documents or not. 
Namespace: Autodesk.Revit.DB.ExternalService
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2014 
Syntax
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Remarks
When a recordable service is executed in a document, a record about the executed server (or servers) is stored in the document's history. This allows active servers to be synchronized next time a saved document is opened in Revit.
Executions of a recordable service in a document must happen inside a transaction.
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentException | When setting this property: A service that doens't support activation should not be recordable. |