An Azure search service with built-in artificial intelligence capabilities that enrich information to help identify and explore relevant content at scale.
Hello @Rangarajan Subramani
as per offline discussion the issue is resolved thanks for confirming
AI Search service in the East US 2 region, which you want to update the sku of but unable to through the portal since there currently is a capacity constraint. if you don't want to use a different region In order to update the sku of your existing search service, may I ask you to try using REST API or ARM template to update your sku? Here are some references on how to create/update your search service with REST API/ARM:
https://learn.microsoft.com/en-us/azure/search/search-manage-rest#create-or-update-a-service
If the answer is helpful, Please do click "Accept the answer” and Yes, this can be beneficial to other community members.
If you have any other questions, let me know in the "comments" and I would be happy to help you