Hi there,

I started following the guidelines for Long running operations on 200 with a Retry-After, however, I quickly found that other frameworks such as jQuery does not support 200 with a Retry-After.

An Article from Mozilla indicates that Retry-After is used with "413 Payload Too Large" and "503 Service Unavailable".
https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

Also another article states the header can be used with 503 or 3XX: https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

I'm not sure which standard / guideline is correct here, but I don't feel very confident with using 200 - unless I am missing something here.

Many thanks,
WhozDougie