Resource not found for the segment

Hi,

I am trying to call the action from XRM Javascript using API. when I tried to call the API(https://innovations.api.crm8.dynamics.com/api/data/v9.0/tech_sampleaction) I am getting the error

"{"error":{"code":"0x80040216","message":"Resource not found for the segment 'tech_sampleaction'.","innererror":{"message":"Resource not found for the segment 'tech_sampleaction'.","type":"Microsoft.OData.UriParser.ODataUnrecognizedPathException","stacktrace":"   at Microsoft.OData.UriParser.ODataPathParser.CreateDynamicPathSegment(ODataPathSegment previous, String identifier, String parenthesisExpression)\r\n   at Microsoft.OData.UriParser.ODataPathParser.CreateFirstSegment(String segmentText)\r\n   at Microsoft.OData.UriParser.ODataPathParser.ParsePath(ICollection`1 segments)\r\n   at Microsoft.OData.UriParser.ODataPathFactory.BindPath(ICollection`1 segments, ODataUriParserConfiguration configuration)\r\n   at Microsoft.OData.UriParser.ODataUriParser.Initialize()\r\n   at Microsoft.OData.UriParser.ODataUriParser.ParsePath()\r\n   at System.Web.OData.Routing.DefaultODataPathHandler.Parse(String serviceRoot, String odataPath, IServiceProvider requestContainer, Boolean template)\r\n   at System.Web.OData.Routing.DefaultODataPathHandler.Parse(String serviceRoot, String odataPath, IServiceProvider requestContainer)\r\n   at Microsoft.Crm.Extensibility.OData.CrmODataPathHandler.Parse(String serviceRoot, String odataPath, IServiceProvider requestContainer)"}}}"  Cany Any one please suggest me how to fix this issue? Thanks in Advance