Message type: E = Error
Message class:  CNV_40305 - Asset transfer postings due to a change of account determ. 
Message number: 026
Message text: Error; no record retrieved from CNV_40305_TABMAP for package &1
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The SAP error message CNV_40305026 indicates that there is an issue with the data migration process, specifically related to the table mapping in the context of a conversion or migration project. The error message states that no record was retrieved from the table CNV_40305_TABMAP for the specified package.
Cause: Missing Mapping Entries: The most common cause of this error is that there are no entries in the CNV_40305_TABMAP table for the specified package. This table is used to map source data to target structures during the migration process. Incorrect Package Name: The package name provided in the error message may be incorrect or not properly defined in the system.
Configuration Issues: There may be issues with the configuration of the migration project, leading to the absence of necessary mapping data. Data Migration Tool Issues: If you are using a specific data migration tool or program, it may not be configured correctly or may have bugs.
Solution: Check
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