Webserver deployment fails with error "Desired service spec customDomains exceeded the max limit"

Note: please note that Liferay has renamed its Liferay Experience Could offerings to Liferay SaaS (formerly LXC) and Liferay PaaS (formerly LXC-SM).

Issue

• I'm trying to deploy the webserver service but the process fails. 
• The Build logs show this error:

DEBUG Deployment interrupted: {"message":"Exceeded Quota Limit","status":403,"errors":[{"reason":"exceededPlanMaximum","context":{"message":"Desired service spec customDomains exceeded the max limit for provided plan XXXX. The max limit is 80","param":"customDomains","attemptUsage":81,"quotaMax":80}}]}

Environment

• Liferay PaaS

Resolution

• This error indicates that the custom domain limit associated with the project has been reached.
• To address this issue, open a support ticket requesting to increase the custom domain limit.