Thanks @hiran_sarkar - so since this is for Ubuntu Core and hence is more appliance specific I think this request is fine. However, the audio-record slot itself is basically a no-op - as explained in a previous thread it exists so that the pulseaudio snap itself (when granted the ability to slot this interface) can mediate access to audio-recording via pulseaudio - so for your snap, I don’t think this is required as you are not expecting to act as a the pulseaudio server for other snaps to connect to (unlike say the pulseaudio snap itself).
As such, you should only need to slot audio-playback - can you please verify that your use-case still works without slotting audio-record?
Also can you confirm that your snap is not expected to be installed alongside other snaps which would want to use audio (since in this case as your snap is owning the pulseaudio socket I don’t think the regular pulseaudio snap would be able to be installed and run alongside your snap at the same time)?
(Given this, I wonder if a custom brand store would be more appropriate for your snap and use-cases rather than using the global store as this would give you more control over these things directly.)