We apologize for the inconvenience. We have raised an internal ticket to fix the issue as soon as possible.
However, please follow PSoC Creator for any such confusion in case of mismatch between the datasheet and Alternate_Function.xlsx . To check the correctness of the information, as an example I drag dropped a SCB component in the Topdesign of my project and assigned Pin 2.0 and Pin 2.1 to the SCL and SDA respectively. I tried to build the project and the build was successful. This helped me understand that Pin 2.0 and Pin 2.1 can be used for SCB while this information was missing in Alternate_Function.xlsx.