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Not able to perform Data Associations in Implementations of Service Task under JDeveloper BPM
Recently i got a request to enhance a BPM project done by previous Developer few months ago. After i imported the project from source code repository,i started making changes to BPMN file.
After adding the Service Task Activity, i tried to implement by making Data association.
As i drag the Variable from left panel, crossing over "Drag Objects here" in the middle section, to right panel variable, with green line moved around, it still does not get attached and turned into blue line.
Can you please help me why i am not able to Data Associate?
Even in the same bpmn file, already existing service tasks created by previous developer, the existing data associations are visible, If i delete(just for testing) one of the data association and tried to re-wire, i still not able to associate.
I compared the BPMN version in the file mentioned in first line "<bpmn:definitions fileRevision="20120601" version="220.127.116.11.0.00.00" ... " against the JDeveloper version which is "18.104.22.168.0.00.00.02.10".
The versions are almost same. Don't know where the problem is. Please help.