How To Fix CNV_00001200 - Critical error in field mapping

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 200

• Message text: Critical error in field mapping

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_00001200 - Critical error in field mapping ?

  The SAP error message CNV_00001200 indicates a critical error in field mapping during a data migration or conversion process, typically associated with SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion tools.
  Cause:
  The error can arise from several issues, including:
  
  Incorrect Field Mapping: The source and target fields may not be correctly mapped, leading to incompatibility in data types or structures.
  Missing Fields: Required fields in the target system may not have corresponding fields in the source data.
  Data Type Mismatch: The data types of the source and target fields may not match (e.g., trying to map a string to an integer).
  Validation Errors: The data being migrated may not meet the validation rules defined in the target system.
  Configuration Issues: There may be issues with the configuration of the migration tool or the mapping settings.
  
  Solution:
  To resolve the CNV_00001200 error, you can follow these steps:
  
  
  Review Field Mapping:
  
  Check the mapping configuration to ensure that all fields are correctly mapped from the source to the target.
  Ensure that all required fields in the target system have corresponding fields in the source data.
  
  
  
  Check Data Types:
  
  Verify that the data types of the mapped fields are compatible. If necessary, adjust the data types in the source data or modify the mapping.
  
  
  
  Validate Data:
  
  Run validation checks on the source data to ensure that it meets the requirements of the target system. Look for any data that may violate constraints or validation rules.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific migration tool you are using. There may be specific guidelines or troubleshooting steps related to field mapping errors.
  
  
  
  Use Logs for Debugging:
  
  Check the logs generated during the migration process for more detailed error messages or warnings that can provide insight into the specific issue.
  
  
  
  Test with Sample Data:
  
  If possible, test the migration with a smaller subset of data to isolate the issue and identify problematic records.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide assistance based on the specific context of your migration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to the CNV_00001200 error.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it may provide additional tools for troubleshooting and resolving mapping issues.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the critical error in field mapping associated with the CNV_00001200 message.