HTTP status codes / 2xx — Success
WebDAV: multiple status values for multiple resources in one XML body.
A WebDAV response wrapping several sub-responses (each with its own status) in one XML document, used for batch operations on collections of resources.
Parse the XML body to find which sub-operations failed; the top-level 207 says nothing about success.
The fastest way to pin down a 207 is to reproduce the exact request and inspect what actually went over the wire — status, headers, timing and body, without your app code in the way. That is what an API client is for; ReqPad does it from your phone, with every request saved to history.
200 OK · 201 Created · 202 Accepted · 203 Non-Authoritative Information · 204 No Content · 205 Reset Content — or the full reference.
Build the request, send it, read status + headers + timing — on your iPhone. Free to start.