Problems with my onmessage

Question

I have two Bpel proccess, lets call them A and B Bpel process. One of them calls the other one.
In the A Bpel I have a "pick" element with a 2 "onmessage", inside the onmessage there is a call to the B bpel proccess, exactly to a pick that is on the B bpel process.
Well my problem is that, I get to receive in the B pick bpel the call fron the A pick bpel but the answer back to the A bpel never arrives.
But when I take out one of the "onmessage" of ANY of the two bpels IT WORKS!!!
Well I know that maybe it's not enough clear, just write me an answer here to clarify if its necesary.
Thanks a lot to everybody.

Answer 1

sorry, I thouth I had wrote the code already.
Bpel A
<pick name="Pick_2">
<onMessage portType="client:TaskSchedulingService" operation="technicianAcceptanceNotification" variable="technicianAcceptanceNotificationRequest" partnerLink="client">
<correlations>
<correlation initiate="no" set="TaskCS"/>
</correlations>
<sequence name="Sequence_4">
<invoke name="technicianAcceptanceNotification" partnerLink="TaskAssignment" portType="ns1:TaskAssignment" operation="technicianAcceptanceNotification" inputVariable="technicianAcceptanceNotificationRequest" outputVariable="technicianAcceptanceNotificationResponse"/>
<reply name="WaitForTechnicianAnswer_Reply" partnerLink="client" portType="client:TaskSchedulingService" operation="technicianAcceptanceNotification" variable="technicianAcceptanceNotificationResponse"/>
</sequence>
</onMessage>
<onMessage portType="client:TaskSchedulingService" operation="technicianRejectionNotification" variable="technicianRejectionNotificationRequest" partnerLink="client">
<correlations>
<correlation initiate="no" set="TaskCS"/>
</correlations>
<sequence name="Sequence_5">
<invoke name="technicianRejectionNotification" partnerLink="TaskAssignment" portType="ns1:TaskAssignment" operation="technicianRejectionNotification" inputVariable="technicianRejectionNotificationRequest" outputVariable="technicianRejectionNotificationResponse"/>
<reply name="WaitForTechnicianRejectionAnswer_Reply" partnerLink="client" portType="client:TaskSchedulingService" operation="technicianRejectionNotification" variable="technicianRejectionNotificationResponse"/>
</sequence>
</onMessage>
</pick>
BPEL B
<pick name="Pick_1">
<onMessage portType="client:TaskAssignment" operation="technicianAcceptanceNotification" variable="WaitForTechnicianAnswer_technicianAcceptanceNotification_InputVariable_1" partnerLink="SecretaryAssistant1">
<correlations>
<correlation initiate="no" set="TaskCS"/>
</correlations>
<sequence name="Sequence_1">
<assign name="Assign_5">
<copy>
<from variable="changeStatusOne_repairTaskStatusChanger_InputVariable" part="tarea" query="/tarea/id"/>
<to variable="GetTask_getTaskById_InputVariable" part="taskId"/>
</copy>
</assign>
<invoke name="GetTask" partnerLink="Utils" portType="ns4:Utils" operation="getTaskById" inputVariable="GetTask_getTaskById_InputVariable" outputVariable="GetTask_getTaskById_OutputVariable"/>
<assign name="Assign_6">
<copy>
<from variable="GetTask_getTaskById_OutputVariable" part="getTaskByIdReturn"/>
<to variable="StatusChanger3_repairTaskStatusChanger_InputVariable" part="tarea"/>
</copy>
<copy>
<from expression="3"/>
<to variable="StatusChanger3_repairTaskStatusChanger_InputVariable" part="status"/>
</copy>
</assign>
<invoke name="StatusChanger_3" partnerLink="Utils" portType="ns4:Utils" operation="repairTaskStatusChanger" inputVariable="StatusChanger3_repairTaskStatusChanger_InputVariable" outputVariable="StatusChanger3_repairTaskStatusChanger_OutputVariable"/>
<reply name="WaitForTechnicianAnswer_Reply" partnerLink="SecretaryAssistant1" portType="client:TaskAssignment" operation="technicianAcceptanceNotification" variable="WaitForTechnicianAnswer_Reply_technicianAcceptanceNotification_OutputVariable"/>
<assign name="Assign_2">
<copy>
<from variable="notifyNewTask_notifyNewTask_InputVariable" part="task"/>
<to variable="notifyTechnicianAcceptance_notifyTechnicianAcceptance_InputVariable" part="task"/>
</copy>
<copy>
<from variable="receiveInput_assignNewTask_InputVariable" part="technicianId"/>
<to variable="notifyTechnicianAcceptance_notifyTechnicianAcceptance_InputVariable" part="technician" query="/technician/id"/>
</copy>
</assign>
<invoke name="notifyTechnicianAcceptance" partnerLink="SecretaryAssistant2" portType="ns2:SecretaryAssistant" operation="notifyTechnicianAcceptance" inputVariable="notifyTechnicianAcceptance_notifyTechnicianAcceptance_InputVariable" outputVariable="notifyTechnicianAcceptance_notifyTechnicianAcceptance_OutputVariable"/>
</sequence>
</onMessage>
<onMessage portType="client:TaskAssignment" operation="technicianRejectionNotification" variable="technicianRejectionNotification_InputVariable" partnerLink="SecretaryAssistant1">
<correlations>
<correlation initiate="no" set="TaskCS"/>
</correlations>
<sequence name="Sequence_2">
<assign name="Assign_7">
<copy>
<from variable="changeStatusOne_repairTaskStatusChanger_InputVariable" part="tarea" query="/tarea/id"/>
<to variable="GetTask_getTaskById_InputVariable" part="taskId"/>
</copy>
</assign>
<invoke name="GetTaskById" partnerLink="Utils" portType="ns4:Utils" operation="getTaskById" inputVariable="GetTask_getTaskById_InputVariable" outputVariable="GetTask_getTaskById_OutputVariable"/>
<assign name="Assign_8">
<copy>
<from variable="GetTask_getTaskById_OutputVariable" part="getTaskByIdReturn"/>
<to variable="StatusChanger_4_repairTaskStatusChanger4_InputVariable" part="tarea"/>
</copy>
<copy>
<from expression="4"/>
<to variable="StatusChanger_4_repairTaskStatusChanger4_InputVariable" part="status"/>
</copy>
</assign>
<invoke name="StatusChanger_4" partnerLink="Utils" portType="ns4:Utils" operation="repairTaskStatusChanger" inputVariable="StatusChanger_4_repairTaskStatusChanger4_InputVariable" outputVariable="StatusChanger_4_repairTaskStatusChanger4_OutputVariable"/>
<reply name="WaitForTechnicianAnswerRejection_Reply" partnerLink="SecretaryAssistant1" portType="client:TaskAssignment" operation="technicianRejectionNotification" variable="technicianRejectionNotification_OutputVariable"/>
<assign name="Assign_9">
<copy>
<from variable="notifyNewTask_notifyNewTask_InputVariable" part="task"/>
<to variable="notifyTechnicianRejection_InputVariable" part="task"/>
</copy>
<copy>
<from variable="receiveInput_assignNewTask_InputVariable" part="technicianId"/>
<to variable="notifyTechnicianRejection_InputVariable" part="technician" query="/technician/id"/>
</copy>
</assign>
Please can anybody tell me why the technicianAcceptanceNotificationRequest answer is never received?
I will thank all the help.