You can update the definition of an existing API by uploading WSDL, Swagger, or RAML file or URL. The uploaded file can also be in a ZIP format. When an API is updated, it retains the Expose to consumers settings, the existing scope definitions, the configured policies, and the REST-enabled path configurations for SOAP API. You can also edit an API using the Edit option for minor edits, whereas the update feature helps you to overwrite the complete API definition using a file or a URL at the same time.

You can update an existing API: