Getting 204 status code for Edge collect calls

[Parm2]

I have AEP web SDK implemented on web page and Adobe Analytics is added as a service in Datastreams. The rule for page load is added in Tags. When the web page is loaded, the launch JS is loaded and then there is collect call with XDM object but it is showing status 204. The data is not recorded in AA for this call. 

What can be the reason for calls not going to AA? and why 204 status code?

[dwright]

You mention a "collect" call. Is the endpoint used "collect" and not "interact" like in the third call below?

I usually see "collect" calls made when i have Target click-tracking set up. What code is triggering your calls?