How To Fix CNV_10020128 - Elem. rel. &1: Determ. with fixed val. obj. as source obj. not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 128

• Message text: Elem. rel. &1: Determ. with fixed val. obj. as source obj. not possible

What causes this issue?

Fixed value object &V2& has been stored as the source object for
elementary relationship &V1&. This is not allowed.

How to fix this error?

Determination using a fixed value object as the source object will
always lead to the same target value. Enter this target value in a
fixed object value, and assign it as the target object to a
determination path (if you want to delimit by the source object).
If no delimitation is planned, you can also assign the fixed value
object directly in table CNV_10020_DTFLD as the source object without
specifying a path.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020128 - Elem. rel. &1: Determ. with fixed val. obj. as source obj. not possible ?

  The SAP error message CNV_10020128 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 is an issue with the determination of a fixed value object as a source object for a specific element relationship.
  Cause:
  The error can arise due to several reasons, including:
  
  Incorrect Configuration: The fixed value object may not be properly configured in the system, leading to issues in determining the relationship.
  Data Mapping Issues: There may be inconsistencies or errors in the mapping of source data to target data, particularly if the fixed value is not recognized or is missing.
  Missing Master Data: The required master data for the fixed value object may not exist in the system, causing the determination to fail.
  Incompatibility: The source object may not be compatible with the fixed value object due to data type mismatches or other constraints.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  Check Configuration: Review the configuration of the fixed value object in the system. Ensure that it is set up correctly and that all necessary parameters are defined.
  Validate Data Mapping: Go through the data mapping settings in the migration tool. Ensure that the source data is correctly mapped to the target fields and that the fixed values are correctly defined.
  Verify Master Data: Check if the required master data for the fixed value object exists in the system. If it is missing, you may need to create or upload the necessary master data.
  Review Logs: Look at the detailed logs or error messages generated during the migration process. They may provide additional context or specific details about what is causing the error.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using. There may be known issues or additional configuration steps required.
  Testing: If possible, perform a test migration with a smaller dataset to isolate the issue and verify that the changes you made resolve the error.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for data migration.
  Community Forums: Consider reaching out to SAP community forums or support channels for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.