Instant warning message appears on the attempt to create domain alias/subdomain by pressing Domains > Add Domain Alias/Add Subdomain button:
Warning : There are no available resources of this type (domain alias). Required: 1; available: 0.
#PPPM-13534 "If Plesk has a subscription with the limit on domain aliases or subdomains set to zero, this no longer prevents the Plesk administrator from creating domain aliases and subdomains in the Plesk interface."
- Plesk Obsidian 24 May 2022
If update is not possible for some reason you may try the following
Until the bug is fixed apply the following workaround:
- Log into Plesk.
- Add domain alias/subdomain via Subscriptions > example.com > Add Domain Alias/Add Subdomain page.