How To Fix CNV20201044 - __From-no.: (before)=&1,(after)=&2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 044

• Message text: __From-no.: (before)=&1,(after)=&2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201044 - __From-no.: (before)=&1,(after)=&2 ?

  The SAP error message CNV20201044 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. The message indicates that there is a discrepancy in the data being processed, specifically regarding the "From-no." (before) and "after" values.
  Cause:
  The error message CNV20201044 usually arises due to one of the following reasons:
  
  Data Inconsistency: The data being migrated or converted has inconsistencies, such as incorrect or unexpected values in the source data.
  Mapping Issues: There may be issues with how the data is mapped from the source to the target system, leading to mismatches in expected values.
  Validation Rules: The data may not meet certain validation rules or constraints defined in the target system, causing the migration process to fail.
  Configuration Errors: There could be configuration errors in the migration settings or parameters that lead to incorrect processing of the data.
  
  Solution:
  To resolve the CNV20201044 error, you can follow these steps:
  
  Check Source Data: Review the source data for any inconsistencies or unexpected values. Ensure that the data conforms to the expected format and values.
  Review Mapping: Verify the mapping configuration between the source and target systems. Ensure that the fields are correctly mapped and that the data types are compatible.
  Validation Rules: Check the validation rules in the target system to ensure that the data being migrated meets all necessary criteria.
  Logs and Traces: Analyze the logs and traces generated during the migration process to identify the specific records causing the issue. This can provide insights into what needs to be corrected.
  Test Migration: If possible, perform a test migration with a smaller dataset to isolate the issue and verify that the changes made resolve the error.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for detailed instructions and best practices.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues and can offer solutions or workarounds.
  
  By following these steps, you should be able to identify the root cause of the CNV20201044 error and implement a solution to successfully complete your data migration or conversion process.