here is the link to the relevant part of user guide.
https://www.arubanetworks.com/techdocs/Instant_87_WebHelp/Content/instant-ug/iap-mainten/conv-to-cap.htmtwo things, you need to have: relevant Controller licenses and remember that all the APs in the Instant cluster will be converted to controller based APs.

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Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba.
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Original Message:
Sent: Jul 12, 2022 11:45 PM
From: KM Yeow
Subject: Add AP-303 to mobility controller
Yes, i have some spare IAP lying around for some time.
need to convert to controller based AP.
i connect them to my poe switch and are able to get DHCP ip address, what else i need to do ?
Original Message:
Sent: Jul 12, 2022 07:20 PM
From: Ariya Parsamanesh
Subject: Add AP-303 to mobility controller
so are you saying that you have an Instant AP and you want to convert it to a controller based AP ?
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Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba.
Original Message:
Sent: Jul 12, 2022 05:21 AM
From: KM Yeow
Subject: Add AP-303 to mobility controller
I need to add some new AP-303 to my mobility controller.
what are the steps to do this ?
i can access the web gui of the AP, after adding the controller IP address, i cannot see the AP in the controller