SAP Solution Manager 7.2 · Solution Documentation: Libraries & Process Model
What's the difference between a process step 'original' and a 'reference' in the Process Step Library?
The library stores each step once — that stored step is the original (includes manual/policy/non-SAP steps for completeness).
Reusing an original in a flow adds a reference, which can carry a different title — e.g. the original "Sales Order" appears as "Order Entry" in a flow. Hierarchy stays ≤ 5–7 levels.
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