How To Fix CNV_20700020 - Mapping maintenance ignored for material numbers

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20700 - Material number conversion

• Message number: 020

• Message text: Mapping maintenance ignored for material numbers

What causes this issue?

In the activity <ZK>Specify Mapping Values</> you have ignored the
mapping maintenance. This means you want to convert the material numbers
only based on number range intervals.

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?

If you want to maintain the mapping, re-execute the activity
<ZK>Specify Mapping Values</> and maintain the mapping accordingly.

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_20700020 - Mapping maintenance ignored for material numbers ?

  The SAP error message CNV_20700020 indicates that there is an issue with the mapping maintenance for material numbers during a data migration or conversion process, typically related to the SAP S/4HANA migration or similar data transfer activities.
  Cause:
  The error message CNV_20700020 can occur due to several reasons, including:
  
  
  Missing Mapping Entries: The mapping table for material numbers may not have the necessary entries, leading to the system being unable to find the corresponding mapping for the material numbers being processed.
  
  
  Incorrect Configuration: There may be a misconfiguration in the mapping settings or the data migration tool being used, which prevents the system from recognizing the material numbers correctly.
  
  
  Data Integrity Issues: The material numbers being processed may not exist in the source system or may have been incorrectly formatted, leading to issues during the mapping process.
  
  
  Authorization Issues: The user executing the mapping may not have the necessary authorizations to access or modify the mapping entries.
  
  
  Solution:
  To resolve the error CNV_20700020, you can take the following steps:
  
  
  Check Mapping Entries:
  
  Verify that the mapping table for material numbers is populated correctly. Ensure that all necessary material numbers have corresponding entries in the mapping table.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the data migration tool or process you are using. Ensure that the mapping process is set up correctly and that all required parameters are defined.
  
  
  
  Validate Data:
  
  Ensure that the material numbers being processed are valid and exist in the source system. Check for any formatting issues or discrepancies in the data.
  
  
  
  User Authorizations:
  
  Confirm that the user executing the mapping has the necessary authorizations to access and modify the mapping entries. If not, work with your SAP security team to grant the required permissions.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or troubleshooting steps provided by SAP.
  
  
  
  Check for SAP Notes:
  
  Look for any relevant SAP Notes that may address this specific error message. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error and the steps you have already taken.
  
  
  
  Related Information:
  
  SAP S/4HANA Migration Cockpit: If you are using the Migration Cockpit, familiarize yourself with its functionalities and how to manage mapping entries effectively.
  Data Migration Best Practices: Review best practices for data migration in SAP to ensure a smooth process and minimize errors.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to identify and resolve the cause of the error message CNV_20700020 effectively.