Message type: E = Error
Message class:  CNV_MBT_46 - PCL message class 
Message number: 070
Message text: Entry not possible; activity id and parent id similar
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The SAP error message CNV_MBT_46070 indicates that there is an issue with the activity ID and parent ID being the same in a specific context, typically related to data migration or conversion processes in SAP systems. This error is often encountered during the execution of migration projects, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when the system detects that the activity ID (the identifier for a specific task or activity) is the same as the parent ID (the identifier for the parent task or activity). This situation is not allowed because it creates a circular reference, which can lead to confusion in the hierarchy of activities.
Solution: To resolve this error, you can take the following steps: Check Activity and Parent IDs: Review the configuration or data entries where the error is occurring. Ensure that the activity ID and parent ID are not set to the same
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