SAP Message /ASU/GENERAL308 - Select a row of an ad hoc step or folder Manual / Fully Automated steps

Diagnosis You want to insert a new ad hoc ASU step. For this purpose you haveselected an invalid reference row within the ALV tree. System Response The system could not insert a new step. Procedure Please select a row which contains either an already existing ASU Step(the new step will be behind this reference row) or one of the fourfolders "Manual Preparation/Follow-Up Steps" or "Fully AutomatedPreparation/Follow-Up Steps" (the new step will be the first stepwithin this folder)