Note: This description is specific to Cisco but applies to Aruba also (ArubaControllerApp).
In a scenario where you want to not have Access Points discovered on an individual WLC you need to set the “enableAPDisc” attribute value to “No” on
the Cisco_LWAPP_App associated to the WLC.
Note: After setting this attribute to “No” make sure to NOT run a discovery from the WLC Manager as this will always set the “enableAPDisc” attribute
value to “Yes” on the Cisco_LWAPP_App for all WLCs
Access Point models are still being created after setting the enableAPDisc to "No" on WLC models in Spectrum
https://knowledge.broadcom.com/external/article?articleId=106889
How does the WLC Manager discovery in Spectrum work ?
https://knowledge.broadcom.com/external/article?articleId=106015