How To Fix EM121 - At least one field is not in the dictionary

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 121

• Message text: At least one field is not in the dictionary

What causes this issue?

During the conversion of the recording data in the auto data structure,
at least one field that is not defined in the ABAP Dictionary was
found.
This is the case, for example, for field &V1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Locate all the fields in the recording data overview that do not have
field names and manually assign field names to these fields.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EM121 - At least one field is not in the dictionary ?

  The SAP error message EM121, which states "At least one field is not in the dictionary," typically occurs when there is an issue with the data dictionary in SAP. This error can arise in various contexts, such as when working with data elements, structures, or database tables. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  
  Field Not Defined: The field referenced in the program or transaction is not defined in the data dictionary (DDIC). This could be due to a typo or because the field was deleted or not created.
  
  
  Incorrect Data Element: The data element associated with the field may not exist or may have been incorrectly specified.
  
  
  Transport Issues: If the object containing the field was transported from one system to another (e.g., from development to production), it may not have been transported correctly.
  
  
  Namespace Issues: If the field is part of a custom namespace and the namespace is not properly defined or activated, it can lead to this error.
  
  
  Version Mismatch: If there are version mismatches between the development and production environments, it can lead to fields not being recognized.
  
  
  Solutions:
  
  
  Check Field Definitions: Verify that the field in question is correctly defined in the data dictionary. You can do this by using transaction SE11 (Data Dictionary) to check the relevant table or structure.
  
  
  Correct Typographical Errors: Ensure that there are no typographical errors in the field names in your code or configuration.
  
  
  Recreate Missing Fields: If a field is missing, you may need to recreate it in the data dictionary.
  
  
  Transport Requests: If the issue is related to transport, ensure that all necessary transport requests have been successfully imported into the target system.
  
  
  Activate Objects: If the field is part of a custom development, ensure that all related objects are activated in the system.
  
  
  Check for Namespace Issues: If the field is in a custom namespace, ensure that the namespace is correctly defined and activated.
  
  
  Debugging: If you are a developer, you can use the debugger to trace where the error is occurring and identify the specific field causing the issue.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE11: Data Dictionary
  SE80: Object Navigator
  SE37: Function Module
  SE38: ABAP Editor
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  
  Documentation: Review SAP documentation for data dictionary objects and field definitions to ensure compliance with best practices.
  
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.