Data typecasting error with api testing - soap ui v5.7.1

[vijay2249]

I am using spring boot application framework to create api endpoints for my application.

In that my test class has string and arraylist as two variables in a user input, while testing this api endpoint with soap ui v5.7.1 when the input is given in integer the tool is automatically typecasting the integer to string and vice versa is also happening.

In an ideal case this should respond with an error but instead it is typecasting the data types automatically which should not happen.