The Integration Service writes data to the error log file differently depending on the Integration Service process operating system:
The Integration Service writes data to the error log file using the Integration Service process code page. However, you can configure the Integration Service to write to the error log file using UTF-8 by enabling the LogsInUTF8 Integration Service property.
The Integration Service writes all characters in the error log file using the UTF-8 encoding format.
The code page for the relational database where the error tables exist must be a subset of the target code page. If the error log table code page is not a subset of the target code page, the Integration Service might write inconsistent data in the error log tables.