The errors API gives you access to errors reported by an integration's tasks. Errors are associated with the task and time range during which they occurred, so you can correlate failures with specific parts of an extractor's work. You retrieve errors by listing them, optionally filtered by task or time range.
An integration error is a problem an extractor encountered while running a task and reported to CDF. Each error is linked to the task it occurred in and includes a start time, plus an end time once the extractor reports it as resolved.