Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 446
Message text: Chart of accounts-independent interval &1 in table TF123
Table TF123 (transaction OB74) contains the chart of
accounts-independent interval &V1& for account type S.
Check if these interval limits should be converted.
By default, TF123 records with initial chart of accounts field are not
converted.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100446 typically relates to issues encountered during data migration or conversion processes, particularly when dealing with the chart of accounts and intervals in the context of the SAP system. This error indicates that there is a problem with the chart of accounts-independent interval in the specified table (TF123).
Cause: The error can be caused by several factors, including: Data Inconsistency: There may be inconsistencies in the data being migrated, such as missing or incorrect entries in the chart of accounts or related tables.
Configuration Issues: The configuration settings for the chart of accounts or the intervals may not be set up correctly, leading to conflicts during the migration process. Missing Entries: The required entries in the TF123 table may be missing or not properly defined, which can lead to this error. Version Compatibility: If you are migrating data from an older version of SAP to a newer one, there may be compatibility
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