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Turn on debug by access http://{{so}}:8080/mso/logging/debug from browser. Also you need to add/change line like "log.debug.CustomE2EGetService=true" in /etc/mso/config.d/mso.bpmn.urn.properties to enable Groove debugging.
Log files
Log file /var/log/ecomp/MSO/BPMN/debugmso.log in testlab_mso_1 container is very helpful to debug issues
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