How To Fix CNV_20900142 - Mapping not maintained for old vendor number : &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 142

• Message text: Mapping not maintained for old vendor number : &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20900142 - Mapping not maintained for old vendor number : &1 ?

  The SAP error message CNV_20900142 indicates that there is a mapping issue related to an old vendor number in the context of a data migration or conversion process. This error typically arises during the migration of vendor data from one system to another, especially when using SAP's data migration tools or during a system upgrade.
  Cause:
  The error occurs when the system encounters an old vendor number for which there is no corresponding mapping defined in the migration settings. This can happen due to several reasons:
  
  Missing Mapping Entries: The mapping table that links old vendor numbers to new vendor numbers is incomplete or missing entries for certain vendors.
  Data Inconsistencies: The old vendor number may not exist in the source data or may have been incorrectly entered.
  Configuration Issues: The migration configuration may not have been set up correctly to handle the specific vendor numbers being processed.
  
  Solution:
  To resolve the error CNV_20900142, you can take the following steps:
  
  
  Check Mapping Table:
  
  Verify the mapping table used for the migration process. Ensure that there are entries for the old vendor numbers that are causing the error.
  If entries are missing, you will need to create them. This typically involves mapping the old vendor number to the corresponding new vendor number.
  
  
  
  Data Validation:
  
  Review the source data to ensure that the old vendor numbers are correct and exist in the system.
  Correct any inconsistencies or errors in the vendor data.
  
  
  
  Update Migration Configuration:
  
  If the mapping is part of a configuration file or a migration tool, ensure that the configuration is set up correctly to include all necessary mappings.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation related to the specific migration tool or process you are using. There may be specific instructions or requirements for handling vendor mappings.
  
  
  
  Testing:
  
  After making the necessary changes, run a test migration to ensure that the error is resolved and that the mapping works as expected.
  
  
  
  Seek Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support or consulting with a professional who specializes in SAP migrations.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary) to check the mapping tables or SE16 (Data Browser) to view the data.
  Migration Tools: Familiarize yourself with the specific SAP migration tools being used, such as SAP S/4HANA Migration Cockpit or SAP Data Services.
  Documentation: Review SAP Notes and guides related to vendor data migration for additional insights and best practices.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_20900142 error effectively.