Message type: E = Error
Message class:  CNV_20900 - Message class for package CNV_20900 
Message number: 218
Message text: Material &1:
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message CNV_20900218 typically relates to issues encountered during data migration or conversion processes, particularly in the context of the SAP S/4HANA migration or data transfer projects. The error message indicates that there is a problem with the material master data for the specified material number (&1).
Cause: The specific causes of this error can vary, but common reasons include: Missing Material Master Data: The material specified may not exist in the system or may not have been properly created. Inconsistent Data: There may be inconsistencies in the material master data, such as missing mandatory fields or incorrect data formats. Data Migration Issues: If this error occurs during a data migration process, it could be due to issues in the mapping or transformation of data from the legacy system to the SAP system. Authorization Issues: The user executing the transaction may not have the necessary authorizations to access or modify the material data.
Solution: To resolve
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