It is not possible to release a phone number at CCP> Phone numbers, please wait message hangs forever.
Browser console shows the error:
TypeError: phoneNumber.userLicense is undefined
userLicense resource was unprovisioned some time ago, together with the removal of the user:
36526558 Remove AD entity of type 'UserAccount' (LDAP: 'CN=Test.User,OU=S001010101,OU=R0001000010,OU=Hosting,DC=hosting,DC=local'; entity_id: 101010) Aug-29-2016 08:10:02 Aug-29-2016 08:10:03 ADSCTask_S001134158 1134158 Successful 36526563 Unbind user 101010 from service 'userLicenses' of application 198 Aug-29-2016 08:10:06 Aug-29-2016 08:10:08 1134158 Successful 36526541 Unprovisioning "LyncUserLicense" for APS application Microsoft Lync Hosting Pack v2 Aug-29-2016 08:09:53 Aug-29-2016 08:10:04 aps_application_instance7414 subscription_id1010101 1134158 Successful
Releasing phone numbers won't work for missing users, and for some reason the numbers were not released automatically with the removal.
Contact Odin Technical Support to resolve the issue.