Fork is not working - BPM

Question

I have done 2 samples using fork and in both the cases it is not working. For each message new BPM is triggered and only one step (branch) gets completed and other branch steps remain in ready state forever.
1) I have tested standard BPM pattern BpmPatternCollectMultiIf
2) Simple process using fork - two branches using different inetrfaces (having different message types)
Integration process return code is 0 - runtime cache
I am testing on local sandbox (XI 3.0) with SP17.
Under SAP help only brief description available about fork. Please share if you have good references/samples about fork (BPM).

Answer 1

Jai,
1)I expect following result in case of standard BPM pattern "BpmPatternCollectMultiIf"
Note: Here same message type for all 3 interfaces ( branches), no end condition, no of branches = 3
As all message types are same when I send first message only one branch will be executed and outbound status under sxmb_moni with be clock (Message being sent). When I send 2 message, second branch will be completed and status will be clock again. And when I send 3 rd message all branches will be completed and outbound status will be success flag (Message successful on outbound side). Under one process id three messages will be displayed
Actual result is every time status as clock. and for each message new fork instance is created. below are the processids for 3 messages
133721
133726 -
unexpected
133731 -
unexpected
Ideally when you send 3 messages all should be process under process ids 133721 to 133725
2) I have tried fork with 3 branches with different message types. When I send 3 messages ( here each payload is different as per message type ) I expect success flag after 3rd message. But in this case also always the status as clock. and every time new fork instance.
Is anybody  successful to test BPM pattern -> BpmPatternCollectMultiIf?