Message type: E = Error
Message class:  CNV - Conversion: Messages for Conversion Services (CNCC) 
Message number: 655
Message text: Watchdog was not activated
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The SAP error message "CNV655 Watchdog was not activated" typically relates to the SAP system's data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. The "watchdog" in this context is a monitoring mechanism that ensures that long-running processes are being tracked and can be terminated if they exceed expected execution times.
Cause: Watchdog Not Configured: The watchdog feature may not be activated in the system configuration. System Settings: There may be specific settings in the SAP system that prevent the watchdog from being activated. Technical Issues: There could be underlying technical issues or bugs in the system that prevent the watchdog from functioning correctly. User Permissions: The user executing the migration may not have the necessary permissions to activate or configure the watchdog.
Solution: Activate the Watchdog: Check the configuration settings for the migration tool you are using (e.g., SLT, SAP Data Services). Ensure that the watchdog feature is enabled
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