Diagnosis
This error is caused by internal inconsistencies in the WorkflowBuilder.

System Response
The workflow cannot be activated and executed. The block structure ofthe workflow definition may be destroyed.

Procedure
Correct the block structure. Choose Extras -> Special Function-> Block Correction. Then check the workflow.
If this error is found again in the check, refer to your workflowsystem administrator.

Procedure for System Administration
If the block correction does not remove the error, create a SAPNetmessage and specify the node number in question.