Problem aiming to solve

This is a refinement in papyrus model about the relationship between ETSI NSD and AID SD, changes are expect to explain 1)ONAP has 2 kinds of service model, one is AID SD, one is NSD, they both belong to DesignEntity. 2)NSD (SD) can nest NSD(SD) , SD can nest NSD in some use cases.

Changes

1. Common Root diagram

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    1) Update the stereotypes of attribute description, validFor and status to OPTIONAL, for ETSI NSD doesn't need this 3 attributes.

    2)Add NSD to be child of DesignEntity, and an additional association to show SD can nest NSD.

    Note: Detail relationship description can be found at Service Project and Ns Project.

2. NSD model diagram, add association NsdCanNestNsd.

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