Can't get voicemail MP3 file correctly associated to Call

[SAMsan]

Hello Community,

I'm trying to associate a recording to a logged call but can't get the right way to do it.
Here's the relevant part of my request using POST on /crm/v3/objects/calls:

"properties": {
"hs_timestamp": 1679501946000,
"hs_call_from_number": "+330000000",
"hs_call_duration": 9500,
"hs_call_callee_object_id": xxxx,
"hs_call_title": "Demande entrante Wildix",
"hs_call_to_number": "+33xxx xxx",
"hs_call_recording_url": "https://xxx.hubspotusercontent.net/hubfs/whatever/msg1.mp3",
"hs_call_direction": "INBOUND",
"hs_call_disposition": "b2cf5968-551e-4856-9783-52b3da59a7d0",
"hs_call_status": "NO_ANSWER"
}

 I tried both `hs_call_recording_url`and `hs_attachment_ids` to attach the file but can't get a call with integrated player on Contact page.
A request using `hs_attachment_ids` manages to attach the file but it can't be played directly from the Call tab (but can from the Contacts > Calls page).

Any thought welcome,

TU!

[SAMsan · Accepted solution]

OK, so marking the call as `INBOUND` prevent non-recipient users to view the audio player.

[SAMsan]

Well, after some more testing, it seems some contacts just won't let the ability to listen voicemail message.
I tried to push the same file (with `hs_call_recording_url` param) and it just worked on another contact (and associated deal).

Doesn't it sound like a bug ?