What is the correct verb and response to accept a batch PUT create and then return multiple locations? The Location header only appears to support one single Uri.
I assumed originally I could use PUT for a batch create and return an string array with a list of Uris, but in looking at the specification, that doesn’t appear to be supported, but it isn’t entirely clear either.
Are multiple Location headers permissible as an alternative?
Any advice?
No, you can have only one Location header field (and yes, it is clear from the spec).
That being said, PUT is for creating/updating a single resource. It seems that you’re using it for something it is not designed for…