Hi Gorthi Sai Sri Sindhuja Thanks for reaching out. Have you tried creating in other regions? Is this happening only when you try creating function app? If the "Create" button is disabled, it may be because you do not have the necessary permissions to create resources in the selected subscription or resource group.
Please Check the permissions for the selected subscription or resource group to ensure that you have the necessary permissions to create resources.
Please also refer to this SO issue for resolution https://stackoverflow.com/questions/75194983/publishing-azure-function-using-visual-studio-not-possible-create-button-disabl
Let me know if you have any other questions.
Please "upvote/accept" if the answer is helpful so that it can help others in the community.