Hi,
I just made some tests here and I did confirm that I only see processes started by the logged user, even though he has all possible roles of administration.
It looks like some sort of bug
When you do, in my example
/processinstances/50171/processdataset
I can see the process dataset,
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Response>
<Code>200</Code>
<Details xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="processDatasetResponse">
<ProcessDataset>
<PathName>50171</PathName>
<Parameters>
<Param>
<Name>ParentProcessROID</Name>
<Label>ParentProcessROID</Label>
<Type>String</Type>
<Value></Value>
</Param>
<Param>
<Name>RootProcessROID</Name>
<Label>RootProcessROID</Label>
<Type>String</Type>
<Value></Value>
</Param>
<Param>
<Name>Progress</Name>
<Label>Progress</Label>
<Type>Double</Type>
<Value>100.0</Value>
</Param>
<Param>
<Name>TouchpointName</Name>
<Label>TouchpointName</Label>
<Type>String</Type>
<Value>Orchestrator</Value>
</Param>
...
but if I try to access the instance:
/processinstances/50171/
I get this error
Error: Runtime instance with ID: 50171 not found