This appears whenever errors occur during an operation. Sometimes it is used to give a list of information (not errors).
It has a toolbar:
Copy whole log to the clipboard (not just any selected items).
It shows some details about when and why the log has been produced, followed by a list view of the errors found. The list view contains these columns:
•Sequence (a number to help identify where the problem occurred, often an entry sequence number)
•Item (the item with the problem, often an entry name)
•Details (more information about where the problem occurred)
•Problem (the nature of the error that occurred)
•System error (the system error message that reported the error)
Some of these columns may be unused for some or all of the errors listed.
The list can be sorted by clicking the headers.
Sometimes you will be asked whether to proceed with the requested action that gave rise to the errors, or to cancel it and correct the errors first.