dain/galaxy-server — comment on commit 1d266f48e62a8b44570a74351102f84f67e7fa50
File: galaxy-agent/src/main/java/com/proofpoint/galaxy/agent/ServiceInventoryResource.java line 39
By martint:

This should be a 200 OK with an empty descriptors list. No Content is usually used for POST/PUT requests that don't need to return a body but want to indicate success and may want to return updated metadata.

Returning 200 with an empty list also makes it easier for clients to parse the response.