The lab walks the user through creating multiple ASPs using the count meta parameter.
At one point it suggests using eastus2, uksouth, and centralindia for your test reasons.
Unfortunately, centralindia is not supported and failed for me (the other regions were successful).
Error: Error creating/updating App Service Plan "plan-free-1nf8dck7-centralindia" (Resource Group "webapps"): web.AppServicePlansClient#CreateOrUpdate: Failure sending request: StatusCode=401 -- Original Error: Code="Unauthorized" Message="The scale operation is not allowed for this subscription in this region. Try selecting different region or scale option." Details=[{"Message":"The scale operation is not allowed for this subscription in this region. Try selecting different region or scale option."},{"Code":"Unauthorized"},{"ErrorEntity":{"Code":"Unauthorized","ExtendedCode":"52020","Message":"The scale operation is not allowed for this subscription in this region. Try selecting different region or scale option.","MessageTemplate":"The scale operation is not allowed for this subscription in this region. Try selecting different region or scale option.","Parameters":["default"]}}]