Web services in Totara are now legacy functionality. Please refer to the GraphQL developer documentation to find out about the replacement for web servicesWe are currently in the process of assessing the requirements for a comprehensive external API. At present, web services represent the only supported external API, though they will eventually be deprecated and replaced by our new system once it is complete.
Web services allow external systems to control your Totara site. They can be enabled under Quick-access menu > Configure features.