When are user-defined exceptions typically thrown?

User-defined exceptions are typically thrown during the processing stages that involve making decisions based on specific criteria or validation of input data. This is especially relevant in Classification or Validation Stations, where the application evaluates input against established rules or thresholds. If the input does not meet these criteria, a user-defined exception provides a way to handle the error gracefully, allowing the process to either retry, log the error, or take alternative actions as needed.

In the context of Classification or Validation, user-defined exceptions help differentiate between normal errors that can occur during processing and those that are significant enough to need special handling, such as invalid input or classification failures. This approach allows developers to create tailored error-handling mechanisms that can provide more relevant feedback and maintain the integrity of the process flow.

The other options, like data input stages, final output generation, or configuring OCR settings, may involve standard exceptions but are not specific to user-defined exceptions that indicate a logic or validation failure within the core processing of data. Thus, the focus of user-defined exceptions lies specifically in the classification and validation phases of a workflow where logic checks are inherently scrutinized.