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

J3742 - Overview

• 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