| Id | string, read-only | The transaction identifier. |
| Documents | Document[], read-only | The array of documents of the transaction. You can get access to any document in the transaction, unless the Custom activity is placed in the For Each Document activity. In this case you will only have access to one document at a time. |
| RegistrationParameters | Record<string, Parameter>, read-only | The dictionary of registration parameters of the transaction. The keys represent parameter names and the key values represent Parameter objects. |
