how can i add action at workflow to prevent the transaction from posting

AI generated answer (using internal Slack threads):

To prevent a transaction from posting using a workflow, you can add an action that returns a user error. This action can be set to trigger on the 'Before Record Submit' event. Here's a step-by-step guide: 1. Navigate to the workflow manager and create a new workflow. 2. Set the 'Record Type' to the type of transaction you want to prevent from posting. 3. Set the 'Trigger Type' to 'Before Record Submit'. 4. Add a new 'State' to the workflow. 5. In the new state, add a new 'Action'. Set the action type to 'Return User Error'. 6. In the 'Return User Error' action settings, you can set the error message that will be displayed to the user when they try to post the transaction. 7. Save the workflow. This will prevent the transaction from being posted and display an error message to the user. Please note that this will prevent all transactions of the specified type from being posted. If you want to conditionally prevent transactions from being posted, you can add a condition to the 'Return User Error' action. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******