Product : FileMaker Pro Advanced 17
How to replicate
I'm doing some work with a Web Service via Insert From URL that the service on a valid POST returns a 204 HTTP Response code. You can see the documentation here : Update an existing contact | Contacts API
If you read all the way at the end, it says that a valid response will be a 204.
However FileMaker throws an error 10 on HTTP 204. This shouldn't be an error.
Workaround (if any)
I can trap for it, and capture the headers and then manually parse out the 204 to check, but FileMaker shouldn't consider this an error if there is a legitimate use for this response code in a working Web Service.
I'm trying to locate a public API that I can give as an example so you can put together a test script, so if I find one I'll send you those details.