How To Fix CNV20201007 - Error when calling func. module CNV_00001_DESCRIBE_FIELD for field = &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 007

• Message text: Error when calling func. module CNV_00001_DESCRIBE_FIELD for field = &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 CNV20201007 - Error when calling func. module CNV_00001_DESCRIBE_FIELD for field = &1 ?

  The SAP error message CNV20201007 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there was an issue when calling the function module CNV_00001_DESCRIBE_FIELD for a specific field, which is represented by &1.
  Cause:
  The error can be caused by several factors, including:
  
  Field Definition Issues: The field specified may not be defined correctly in the data structure or may not exist in the target system.
  Data Type Mismatch: There may be a mismatch between the expected data type of the field and the actual data being processed.
  Missing Customization: If the field is part of a custom development or enhancement, it may not be properly configured or activated in the system.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to access the field or the function module.
  Transport Issues: If the system is newly upgraded or has recently undergone changes, there may be inconsistencies in the transport of objects related to the field.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Field Definition: Verify that the field specified in the error message exists in the target structure and is correctly defined. You can do this by checking the data dictionary (SE11) for the relevant table or structure.
  
  
  Review Data Types: Ensure that the data types of the source and target fields match. If there are discrepancies, you may need to adjust the data mapping in your migration process.
  
  
  Custom Development: If the field is part of a custom development, ensure that all necessary enhancements are activated and that the relevant transport requests have been imported correctly.
  
  
  Authorization Check: Confirm that the user executing the migration has the necessary authorizations to access the function module and the fields involved.
  
  
  Debugging: If the issue persists, consider debugging the function module CNV_00001_DESCRIBE_FIELD to identify the exact point of failure. This may require technical expertise in ABAP.
  
  
  Consult Documentation: Review SAP notes and documentation related to the migration process you are using. There may be specific notes addressing this error.
  
  
  SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. Provide them with the error details and any relevant logs.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to data migration, such as LTMC (Migration Cockpit) or LTMOM (Migration Object Modeler).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or fixes related to this error.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to diagnose and resolve the CNV20201007 error effectively.