You can use the error handler feature to perform actions if any of the nodes in the task fail. The required Error Handler blocks can be called from the nodes.

If a node fails in a task, use error handler block to insert the failed records in the Audit table.

Design Error Handler Block

1. Drag the Error Handler node and drop it in the Design Studio. A block appears for Error Handler node.
2. Drag the required nodes within the block based on the actions to be performed
3. In the Properties tab, Enter description in the Description field. Default name of the Node gets replaced with the Description entered.

4. In the Variables tab, click the +add variable button to add a new variable that will be passed from the parent node.

   1. Click the + icon to add more variables as required.

5. Design and set the properties of the nodes within the Error Handler block based on actions to be performed.

In a TravelBooking Hyperapp, use error handler block to send an Email to the employee, if the WebUI node fails.

Select Error Handler Options in the Parent Node

1. In the Properties tab, select the required error handling option if node fails, from the below list.
   • Continue: Task execution continues to next node
   • Stop: Task execution stops
   • Continue after running error handling block: Task execution continues to next node after running error handling block
   • Stop after running error handling block: Task execution stops after running error handling block A drop-down is displayed for the last two options.

2. Select the required error handler block from the drop-down.

3. Click the icon next to error handler option in case you want to map variables to the error handler block.
   Mapping screen appears with the variables already created in the error handler block.

4. Map the values from the nodes in the task to the variables.

In a TravelBooking Hyperapp, when the WebUI node fails, nodes inside the error handling block are executed and an email is sent to the customer using the values mapped.