Message type: E = Error
Message class:  CNVMBT - Messages for MBT/API/PCL 
Message number: 300
Message text: Selected node not found
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The SAP error message CNVMBT300: Selected node not found typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is unable to locate a specific node or entry in the data structure that is expected during the migration process. Causes: Missing Data Structure: The node that the system is trying to access may not exist in the data model or structure being used for the migration. Incorrect Mapping: There may be an issue with the mapping of fields or nodes in the migration template, leading to a reference to a non-existent node.
Configuration Issues: The configuration settings for the migration process may not be set up correctly, causing the system to look for nodes that are not defined. Version Compatibility: The error may arise if there are compatibility issues between the source and target systems, especially if
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