@tanjadegroot, thanks for your review. We have addressed comments and updated the code accordingly. Please take another look when you have a moment.

Most of problems are fixed in [Modify network-slice-assignment API Path and Feature Files #96](#96):

• Reformat network-slice-assignment API Path
  • /slices/{sliceId}/devices:
    post: # Assign device to slice
    get: # Get devices assigned to slice
  • /slices/{sliceId}/release:
    post: # Release device from slice (verb path, device in body)
  • /retrieve-slices:
    post: # Retrieve slices by device (verb path, device in body)
• Add the definition of notificationsBearerAuth in both API definitions
• Modify schema CreateSlice to SliceAttributes
• Modify description unbind --> release - consistent terminology helps understanding
• Modify schema SliceDevice --> SliceDevices (as the type is a list)
• Modify OperationId in API definition YAMLs (AssignDevice, releaseDevice, getDevices, retrieveSlicesByDevice)
• Modify feature filenames to consistent with operationId

Version problems are modified in this PR:

• CHANGELOG.MD: Add r2.1 in the table of contents.
• README.md: Update the link version and links for NSA API.
• API definition: Correct the version
• Checklist: link the ICM version with r3.3 (will modify in the public release), add the API description for NSA API