How To Fix CNV20305657 - &1 values were read and &2 mappings transferred from the master data

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20305 - Messages for conversion packages in CO

• Message number: 657

• Message text: &1 values were read and &2 mappings transferred from the master data

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 CNV20305657 - &1 values were read and &2 mappings transferred from the master data ?

  The SAP error message CNV20305657 typically relates to issues encountered during data migration or conversion processes, particularly when using SAP's data migration tools. This error message indicates that there is a discrepancy between the number of values read from the master data and the number of mappings that were successfully transferred.
  Cause:
  
  Data Inconsistency: The master data may contain inconsistencies or errors that prevent successful mapping.
  Mapping Configuration Issues: There may be issues with the mapping configuration, such as missing or incorrect mappings.
  Data Format Issues: The format of the data being read may not match the expected format for the mappings.
  Incomplete Data: Some required data may be missing, leading to a mismatch in the expected number of mappings.
  
  Solution:
  
  Check Master Data: Review the master data for any inconsistencies or errors. Ensure that all required fields are populated correctly.
  Review Mapping Configuration: Verify the mapping configuration to ensure that all necessary mappings are defined and correctly set up.
  Data Validation: Validate the data being read to ensure it meets the expected format and criteria for successful mapping.
  Log Analysis: Check the logs for more detailed error messages that can provide insights into what went wrong during the mapping process.
  Re-run the Migration: After addressing any identified issues, re-run the migration process to see if the error persists.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to this error message. SAP frequently updates its knowledge base with solutions for common issues.
  Documentation: Review the documentation for the specific data migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) for best practices and troubleshooting tips.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.