"No suitable output for Product" message while running process flow simulation

I have a situation where I keep getting the same error-message "No suitable output for product" while running a process flow simulation, see attached simplified system.

I have defined a source operation in the source and a general operation in a general system and attached items to those operations.

Settings (capacity, cycle times etc) are taken over from the 3.5HP-engine example from the e-learnings.

Does anyone have a clue as to what I am doing wrong?

Any help would be appreciated. 


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