To utilize the default REFramework without relying on Orchestrator queues, the essential prerequisite is to exclude the Get Transaction Item activity from the project, eliminate the three SetTransactionStatus activities from the SetTransactionStatus workflow, and change the variable type of the TransactionItem and TransactionData variables. The Get Transaction Item activity is used to retrieve a transaction item from the Orchestrator queue, which is not needed if the queue is not used. The SetTransactionStatus activities are used to update the status of the transaction item in the Orchestrator queue, which is also not needed if the queue is not used. The variable type of the TransactionItem and TransactionData variables should be changed to match the type of data that is used as input for the process, such as DataRow, String, or Object. These changes will ensure that the project does not interact with Orchestrator and can use other sources of data for the transactions. References: [The UiPath REFrameWork], [Get Transaction Item], [Set Transaction Status]