You receive an error that an attended node hasn't been assigned to a user group. How do you resolve this issue?

In the context of Appian process design, when you encounter an error indicating that an attended node hasn't been assigned to a user group, resolving this involves ensuring that the node has a proper assignment configuration.

Assigning the node to a specific user group is essential because Appian needs to know who is allowed to interact with that node in the process flow. This step is done through the Assignment tab of the target node, where you can specify which users or groups are responsible for taking action on that node. By assigning the attended node directly to a group, you ensure that the appropriate users will receive the task or decision that is required at that stage of the process.

Other choices do not directly address the assignment issue. Mapping data to process using node inputs or adding a process variable for assignments pertains to data handling rather than user assignments. Changing the object security configurations might alter access levels but does not specifically assign users to a node. Therefore, assigning the node in the Assignment tab is the most effective and direct solution to resolve the error.