Message type: E = Error
Message class:  CNV_MBT_09_A - Message class for drop-solution 
Message number: 509
Message text: It is not possible to define the deletion scenario at package level
In order to define the deletion scenario a sample of tables is selected
and their distribution of data between clients is determined. According
to table statistics, the overall number of entries for these tables is
zero, or these tables do not have entries in the system client. In both
cases it is not possible to define the deletion scenario.
The deletion scenario will not be defined automatically.
If necessary, the deletion scenario at package level can be determined
manually by using activity  TD09P_GEN_MAINTAIN_PACK.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_MBT_09_A509 indicates that there is an issue with defining a deletion scenario at the package level in the context of a data migration or conversion project, typically using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: This error usually arises due to one of the following reasons: Incorrect Configuration: The deletion scenario may not be properly configured in the migration project. This could be due to missing or incorrect settings in the migration package. Package Level Restrictions: The system may have restrictions that prevent the definition of deletion scenarios at the package level. This could be due to the way the migration project is structured or the specific requirements of the data being migrated. Authorization Issues: The user may not have the necessary authorizations to define or modify deletion scenarios at the package level. Technical Limitations: There may be technical limitations or bugs in the version of SAP you are using
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