How To Fix J3742 - Transaction differentiation (RADKEY field) must be the only target field

SAP Error Message - Details

• Message type: E = Error

• Message class: J3 - Dialog Messages for Data Pool Entry Transactions

• Message number: 742

• Message text: Transaction differentiation (RADKEY field) must be the only target field

What causes this issue?

You attempted to create a derivation rule in which transaction
differentiation is used together with additional fields as target
fields.

System Response

The system is unable to save this derivation rule.

How to fix this error?

If you want to use transaction differentiation as the target field in a
derivation rule, then you cannot add further target fields to this
derivation rule.

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 J3742 - Transaction differentiation (RADKEY field) must be the only target field ?

  The SAP error message J3742 indicates that there is an issue with the transaction differentiation in the context of a specific process, likely related to the use of the RADKEY field. This error typically arises in scenarios involving data transfer or transaction processing where the system expects a unique identifier for the transaction.
  Cause:
  The error occurs when the system detects that the RADKEY field is not the only target field being used for transaction differentiation. This can happen in various situations, such as:
  
  Multiple Target Fields: If you are trying to use multiple fields for transaction differentiation instead of just the RADKEY field.
  Incorrect Configuration: The configuration of the transaction or data transfer process may not be set up correctly, leading to conflicts in how the system interprets the target fields.
  Data Mapping Issues: If there are issues in the mapping of data fields during a data transfer or integration process, it can lead to this error.
  
  Solution:
  To resolve the J3742 error, you can take the following steps:
  
  
  Check Configuration: Review the configuration settings for the transaction or data transfer process. Ensure that the RADKEY field is the only field designated for transaction differentiation.
  
  
  Adjust Data Mapping: If you are using a data transfer tool or middleware, check the mapping of fields. Ensure that only the RADKEY field is being used for differentiation and that no other fields are included.
  
  
  Review Documentation: Consult the SAP documentation or help resources related to the specific transaction or process you are working with. There may be specific guidelines on how to set up transaction differentiation correctly.
  
  
  Test Changes: After making adjustments, test the transaction or data transfer process to ensure that the error is resolved and that the system behaves as expected.
  
  
  Consult SAP Support: If the issue persists after checking the configuration and mapping, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration or version.
  
  
  Related Information:
  
  RADKEY Field: The RADKEY field is typically used as a unique identifier for transactions in SAP systems. Understanding its role and how it interacts with other fields is crucial for troubleshooting.
  Transaction Codes: Familiarize yourself with the transaction codes related to the process you are working on, as they may provide additional context for the error.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to identify the cause of the J3742 error and implement a solution to resolve it.