Symptoms
Task "Execute operation 'provisionWebsite' with ID XXXXX on resource YYYYY" fails with the following output:
APS Application Error:
503 Service Unavailable
Body:
{"code":0,"message":"There are no available addresses for the server 10.10.10.10."}
"ipv4Address" parameter in configuration for ServicePleskWebApache is set to "none":
There are no IP addresses on the subscription on the APS side:
"ipv4Address": "none",
"ipv6Address": "none",
Cause
"ipv4Address" and "ipv6Address" parameters were taken from WebHosting Plesk Service Template on the subscription creation. At the time, the Service Template had IP address (V4) and IP address (V6) values set to "None" in Products > Service Templates > WebHosting Linux > Hosting Parameters.
Even though the IP address (V4) was changed to "Shared" after that, the subscription was not synchronized with changes made.
Resolution
Synchronize subscriptions with the changes in Products > Service Templates > WebHosting Linux > Synchronize and restart the task.