How To Fix CNV_DMC_SIN254 - Value "&3" of field "&2" not mapped in rule "&1"

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 254

• Message text: Value "&3" of field "&2" not mapped in rule "&1"

What causes this issue?

The value "&V3&" in field "&V2&" of the mapping rule "&V1&" is currently
not mapped.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please open the Mapping rule <ZH>"&V1&"</> in the <ZK>Convert values</>
step and map the source value "&V3&" to an SAP S/4HANA target value or
confirm an existing value mapping.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_SIN254 - Value "&3" of field "&2" not mapped in rule "&1" ?

  The SAP error message CNV_DMC_SIN254 indicates that a specific value for a field is not mapped in the data migration rules during a data conversion or migration process. This error typically occurs in the context of SAP Data Migration Cockpit (DMC) or similar tools used for data migration.
  Cause:
  The error message breaks down as follows:
  
  Field "&2": This refers to the specific field in the data structure that is being processed.
  Value "&3": This is the actual value that is being encountered in the data for that field.
  Rule "&1": This indicates the specific mapping rule that is being applied during the migration process.
  
  The error occurs when the migration tool encounters a value in the source data that does not have a corresponding mapping defined in the specified rule. This can happen due to:
  
  Missing mapping entries in the transformation rules.
  Incorrect or unexpected values in the source data.
  Changes in the data structure or business logic that have not been reflected in the mapping rules.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Mapping Rules:
  
  Open the mapping rules in the Data Migration Cockpit or the relevant tool you are using.
  Look for the rule specified in the error message (&1).
  Verify if the value (&3) for the field (&2) is defined in the mapping. If not, you will need to add a mapping for this value.
  
  
  
  Update Source Data:
  
  If the value is not valid or expected, consider updating the source data to ensure it aligns with the expected values defined in the mapping rules.
  
  
  
  Consult Documentation:
  
  Review the documentation for the data migration process to understand the expected values and mappings for the fields involved.
  
  
  
  Testing:
  
  After making changes to the mapping rules or source data, re-run the migration process to see if the error persists.
  
  
  
  Log and Analyze:
  
  If the issue continues, check the logs for additional context or related errors that might provide more insight into the problem.
  
  
  
  Seek Help:
  
  If you are unable to resolve the issue, consider reaching out to SAP support or consulting with a colleague who has experience with data migration in SAP.
  
  
  
  Related Information:
  
  SAP Data Migration Cockpit: A tool used for migrating data into SAP systems, which includes functionalities for mapping, transforming, and validating data.
  Data Mapping: The process of defining how data from a source system corresponds to fields in the target system.
  Error Handling: Understanding how to handle errors during data migration is crucial for successful implementation. Familiarize yourself with common error messages and their resolutions.
  
  By following these steps, you should be able to identify and resolve the issue related to the CNV_DMC_SIN254 error message.