The FLOW isn't parallel - why?

The BPEL process starts out with three parallel flows. Each flow makes (1) a database access, (2) Using aswitch determines it is appropriate to proceed, (3) Invokes a Asynchronous process, (4) Receives the result of the process, then all three flows join. All three flows were originally using the same partnerlink to the Asynchronous process. I tried giving one of the parallel paths a separate partnerlink, but that didn't change anything.
When I look at the initial process flow in the BPEL Manager the initial couple of activities are shown in each flow's parallel path. One of the flows has invoked the Asynchronous process and is now waiting on its corresponding receive activity. The other two flows are not proceeding beyond the switch.
If I inject the required signal for the flow waiting on the receive, it proceeds beyond the join of the three parallel paths and into the next scope. In other words it doesn't wait for the other two paths to complete.
Can someone suggest what could possibly be wrong?
I tried adding a property to the Asynchronous process partnerLink, *<property name="nonBlockingInvoke">true</property>*, but that caused the invoke to blow up. I assume that property is not appropriate for an Asynchronous process.

Perhaps you have a correlation issue. If the same process invokes another process from multiple flow activities it needs to know which branch that should receive a given answer. I'm not sure how the built-in correlation with WS-Addressing works, but perhaps it cannot handle this?
You could try content-based correlation and see if that helps you. You could also move the code that does the invoke and receive to a separate synchronous process and use it (you may get timeouts in real life, but for testing it should be fine). There would then be a one-to-one mapping between the calling and called process.
I may be totally wrong here, but at least it is easy to try :-).

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Hi all,
I've already posted something like this, but i think this explanation is a little clearer than the old one.
is it possible to branch the flow in two parallel notifications? My workflow has a function that evaluates attributes, an in some cases, the conditinos are met for more than one possible "route"; but the PL/SQL function can return only ONE resultout.
Thansk in advance for your help.

You can branch a process by creating multiple outgoing transitions from the activity for the same result.
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http://download-west.oracle.com/docs/cd/B13789_01/workflow.101/b10284/overview.htm#overview
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The FLOW isn't parallel - why?

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