Message type: E = Error
Message class:  CNV_20320_CHECK - Messages for check functions (Activity Types merge) 
Message number: 000
Message text: Implicit activity type merge found
An <DS:TX.CNV_MBT_IMPLICIT_MERGE>implicit merge</> of activity types was
detected. This occurs for example when two controlling areas are merged,
which contain activity types with the same name.
From a business perspective it needs to be checked if the corresponding
activity types have the same semantic or if they need to be mapped to
avoid a merge.
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_20320_CHECK000 with the description "Implicit activity type merge found" typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there are implicit merges of activity types that need to be addressed before proceeding with the migration.
Cause: The error is usually caused by the following scenarios: Duplicate Activity Types: There are multiple activity types defined in the system that are implicitly merged, which can lead to confusion in reporting and data integrity. Inconsistent Data: The data being migrated may have inconsistencies or conflicts that result in implicit merges of activity types.
Configuration Issues: The configuration settings in the source or target system may not align, leading to unexpected merges.
Solution: To resolve the CNV_20320_CHECK000 error, you can follow these steps: Identify Duplicate Activity Types: Check the activity types in the source system to identify any duplicates or similar entries that may
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