How To Fix EM207 - Field &2 in structure &1 is not a migration field

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 207

• Message text: Field &2 in structure &1 is not a migration field

What causes this issue?

Field &V2& of structure &V1& is defined as a <LS>non-migration field
</>. This means that this field does not generally need to be supplied
with data.
However, when you enter a field rule, the field is supplied with data.

System Response

How to fix this error?

If you still want to assign a field rule, release the data.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EM207 - Field &2 in structure &1 is not a migration field ?

  The SAP error message EM207 indicates that a specific field in a structure is not recognized as a migration field during a data migration process. This typically occurs when you are trying to migrate data using tools like the SAP Migration Cockpit or other data transfer methods, and the system expects certain fields to be designated as migration fields but finds that they are not.
  Cause:
  
  Field Not Defined for Migration: The field you are trying to use is not defined as a migration field in the relevant data structure or mapping.
  Incorrect Mapping: The mapping of fields in the migration template may not align with the expected structure in the target system.
  Version Mismatch: The version of the source or target system may not support the field as a migration field.
  Custom Fields: If you are using custom fields, they may not be included in the migration structure.
  
  Solution:
  
  Check Migration Structure: Verify that the field in question is indeed defined as a migration field in the relevant migration structure. You can do this by checking the data migration templates or structures in the SAP system.
  Update Mapping: If the field is not included, you may need to update your mapping or migration template to include the correct fields.
  Consult Documentation: Refer to the SAP documentation for the specific migration scenario you are working on to ensure you are using the correct fields.
  Use Standard Fields: If possible, use standard fields that are recognized by the migration tools instead of custom fields.
  Check for Updates: Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes or enhancements related to migration processes.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific migration scenario you are working on. These notes often contain important information about known issues and their resolutions.
  Migration Cockpit: Familiarize yourself with the SAP Migration Cockpit and its functionalities, as it provides tools and templates for data migration.
  Data Dictionary: Use transaction SE11 to check the data dictionary for the structure and fields involved in the migration to understand their definitions and properties.
  Community Forums: Engage with SAP community forums or support channels for additional insights and shared experiences from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the EM207 error and implement a solution to resolve it.