Side Button Access entitlement not appearing in Xcode capabilities list

Hi everyone,

I'm trying to add the Side Button Access entitlement to my voice-based conversational app following the documentation, but I'm unable to find it in Xcode.

Steps I followed:

  1. Selected my app target in Xcode project navigator
  2. Went to the Signing & Capabilities tab
  3. Clicked the + Capability button
  4. Searched for "Side Button Access"

Problem: The "Side Button Access" option does not appear in the capabilities list at all.

Environment:

  • I'm developing and testing in Japan (where this feature should be available)
  • Xcode version: Xcode 26.2 beta 3
  • iOS deployment target: iOS 26.2

Questions:

  • Is there any pre-registration or special approval process required from Apple before this entitlement becomes available?
  • Are there any additional requirements or prerequisites I need to meet?
  • Is this feature already available, or is it still in a limited beta phase?

Any guidance would be greatly appreciated. Thank you!

Side Button Access entitlement not appearing in Xcode capabilities list
 
 
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