Message type: E = Error
Message class:  CNV_PE - General messages for posting engine 
Message number: 579
Message text: Local DDIC type information will be used
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The SAP error message CNV_PE579, which states "Local DDIC type information will be used," typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This message indicates that the system is unable to find the appropriate Data Dictionary (DDIC) type information in the target system and is defaulting to local DDIC type information instead.
Cause: Missing or Incomplete DDIC Objects: The target system may not have the necessary Data Dictionary objects (like tables, structures, or data elements) defined, which are required for the migration process. Version Mismatch: There may be a version mismatch between the source and target systems, leading to discrepancies in the DDIC definitions. Transport Issues: If the required DDIC objects were not transported correctly to the target system, this could lead to the error. Custom Developments: If there are custom data types or structures that are not present in the target
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