Documentation to the rescue! CALL - SAP HANA SQLScript Reference - SAP Library
CREATE PROCEDURE SingelRoute1(IN STARTSTOP NVARCHAR(40),
IN ENDSTOP NVARCHAR(40),
OUT OUT_ROUTE ROUTE)...
Number of parameters defined: 3 (2 IN, 1 OUT).
call "TRAFFIC"."SINGELROUTE"('安美居','任家口');
Number of parameters provided in call: 2 (2 IN).
Error message says:
Wrong number or types of parameters in call
Solution: provide correct amount of parameters. In this case, add the OUT parameter.
call "TRAFFIC"."SINGELROUTE"('安美居','任家口', ?);
Tataaa!