To use the user message trace functionality, set values in the following properties of the HCSC server runtime definition file:

• telegramtrace property
• telegramtrace-filepath property
• telegramtrace-filesize property
• telegramtrace-filenum property
• telegramtrace-trigger property

For details about the properties, see HCSC Server Runtime definition file in the Service Platform Reference Guide.

If you specify the settings for acquiring a user message trace, the settings are enabled for the entire HCSC server.