How To Fix CNV_10020104 - &1, SrcPack &2: TgtVal &3 assigned to more than one source => Src card. N

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 104

• Message text: &1, SrcPack &2: TgtVal &3 assigned to more than one source => Src card. N

What causes this issue?

The system found that the source values &V4& (and maybe others as well)
have the same target value &V3& assigned. This corresponds to a source
cardinality of N.
However source package &V2& requires a source cardinality of 1.

System Response

With regard to the data constellation, this path is not used in source
package &V2&.

How to fix this error?

The target cardinality of N may have been caused by irrelevant values.
If this is the case, maintain the relevance table accordingly and
repeat the check.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020104 - &1, SrcPack &2: TgtVal &3 assigned to more than one source => Src card. N ?

  The SAP error message CNV_10020104 typically occurs during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that a target value (TgtVal) is assigned to more than one source value (SrcPack), which can lead to ambiguity in the data mapping process.
  Cause:
  The error arises when:
  
  A target value in the migration mapping is linked to multiple source values. This can happen if the source data is not unique or if there are multiple records in the source that map to the same target value.
  There may be issues with the data quality in the source system, such as duplicates or inconsistencies.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Mapping Configuration:
  
  Check the mapping configuration in the migration tool to ensure that each target value is uniquely assigned to a single source value.
  Identify the source values that are causing the conflict.
  
  
  
  Data Cleansing:
  
  Clean the source data to eliminate duplicates or inconsistencies. Ensure that each source value is unique and correctly mapped to the target value.
  You may need to aggregate or transform the source data to ensure that it aligns with the target structure.
  
  
  
  Adjust the Mapping Logic:
  
  If necessary, adjust the mapping logic to handle cases where multiple source values should map to a single target value. This may involve creating a new mapping rule or modifying existing ones.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the migration process again to ensure that the error is resolved.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or migration guides specific to the tool you are using for additional insights and best practices.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like LTMC (for Migration Cockpit) or LTMOM (for Migration Object Modeler) to manage your migration objects and mappings.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration in SAP, including data validation, cleansing, and mapping strategies.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to successfully complete your data migration.