3547051 - Protocol error 403 while creating a model from Live data connection SAC

You received Protocol error while creating a model from Live data connection SAC. If you open F12 developer tool you will see a failed POST request for URL: <host>:<port>/sap/bc/ina/service/v2/GetResponse with return code 403.

After opening debug trace mentioned in note 3361349, you can see this debug trace: d XSRequestHandler RequestHandler.cpp(00657) : Request execution failed due to missing or invalid XSRF token

If you directly visit this request URL, you will see "INA: Error Code = 11: ina: Parameter 'Request' is missing." in trace and possibly a 500 error code is returned. 

or
You got following error when you tried to create model in SAC via live data connection.

Cannot fetch csrf token from server 

• SAP HANA platform edition 2.0
• SAP Analytics Cloud

Request execution failed due to missing or invalid XSRF token, /sap/bc/ina/service/v2/GetResponse, ina: Parameter 'Request' is missing, INA: Error Code = 11: ina: Parameter 'Request' is missing, Request execution failed due to missing or invalid XSRF token, Cannot fetch csrf token from server  , KBA , HAN-AS-XS , SAP HANA Extended Application Services , LOD-ANA-LDC-HAN , SAC Live Data Connection HANA , Problem