Message type: E = Error
Message class:  MDG_BS_BP_MLT_AS - Messages for multiple assignment function 
Message number: 040
Message text: For characteristic &1 there is already an entry with same valuation.
You have maintained an additional multivalue characteristic record in a
list using a valuation that already exists.
The new record is invalid. You cannot create a new record and use the
valuation of an existing record multiple times. The system does not
accept the new record.
Change the valuation for the new record. Alternatively, you can delete
the newly created record. Do not delete the already existing record.
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 MDG_BS_BP_MLT_AS040 indicates that there is a duplicate entry for a characteristic in the Business Partner (BP) Master Data Governance (MDG) system. Specifically, it means that for the characteristic specified (represented by &1), there is already an existing entry with the same valuation, which violates the uniqueness constraint for that characteristic.
Cause: Duplicate Data Entry: The most common cause of this error is that during the creation or update of a business partner, the system detects that the characteristic value being entered already exists for that characteristic in the database. Data Migration Issues: If data was migrated from another system or if there were bulk uploads, it is possible that duplicates were introduced.
Configuration Issues: The configuration of the characteristics in the MDG system may not be set up correctly, leading to unexpected behavior.
Solution: Check Existing Entries: Review the existing entries for the characteristic in question. You can do this by navigating
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