Not able to create new TFVC repository in Azure DevOps

Issue: Not able to create new TFVC repository and Git is marked and unable to change it to TFVC repository

When you try to create a new TFVC repository the option to choose an repository will be disabled as shown below. This is due to the fact as you already have an TFVC repository in your project

Solution : This happens when you already have a TFVC repository in the project and Azure DevOps has a limit of only one TFVC repository per project.