Use log events to determine the cause of workflow or session problems. To resolve problems, locate the relevant log codes and text prefixes in the workflow and session log.

The Integration Service precedes each workflow and session log event with a thread identification, a code, and a number. The code defines a group of messages for a process. The number defines a message. The message can provide general information or it can be an error message.

Some log events are embedded within other log events. For example, a code CMN_1039 might contain informational messages from Microsoft SQL Server.