Enhancement to variable key exists -> see long text

Message type: E = Error

Message class: P0 - Messages for Transactions PE01, PE02 and PE03

Message number: 233

Message text: Enhancement to variable key exists -> see long text

You would like to replace a decision operation with a normal operation
or a jump operation. This is not possible since the an enhancement of
the variable key already exists for the decision operation.

Error message extract from SAP system. Copyright SAP SE.