bpel:21: error: There is no start activity in process

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Applies to:
BPEL : 12.2.1.1
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Problem Summary:
While trying to compile bpel code getting bpel:21: error: There is no start activity in process because of which build is failed.

Have used BPEL template defined service later for BPEL process.
It has a receive activity.

Error:
BPEL/FileBpelProcess.bpel:21: error: There is no start activity in process "FileBpelProcess"

Buildfile: C:\oracle12211\Middleware\Oracle_Home\soa\bin\ant-sca-compile.xml

scac:
    [input] skipping input as property scac.input has already been set.
     [scac] Validating composite "C:\JDeveloper\mywork\SOAPractice\fileAdapterDemo\SOA\composite.xml"
     [scac] soa.mds.consolidation is set to true
     [scac] Setting BPELC option 'classpath' to
.
.
.
.
     [scac] BPEL/FileBpelProcess.bpel:21: error: There is no start activity in process "FileBpelProcess"

BUILD FAILED
C:\oracle12211\Middleware\Oracle_Home\soa\bin\ant-sca-compile.xml:344: Java returned: 1 Check log file : C:\JDeveloper\mywork\SOAPractice\fileAdapterDemo\SOA\SCA-INF\classes\scac.log for errors

Total time: 5 seconds
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Root Cause:
Above issue arises when we use receive activity in BPEL with createInstance as no.
By default it's value is no when we are using defined service later bpel template.

.bpel Code Snippet:
<receive name="ReceiveInput" partnerLink="pollFile" portType="ns1:Read_ptt" operation="Read"
             variable="ReceiveInput_Read_InputVariable" createInstance="no"/>

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Resolution:
1. Go to project => BPEL => Open BPEL process (FileBpelProcess.bpel)
2. Double-click on the Receive activity.
3. Check the "Create Instance" checkbox and click on "OK".
4. Recompile project. This should fix your issue.

BPEL code snippet after change:
<receive name="ReceiveInput" partnerLink="pollFile" portType="ns1:Read_ptt" operation="Read"
             variable="ReceiveInput_Read_InputVariable" createInstance="yes"/>