You have some errors in your pin assignment as using pins for two different SCBs.
I would suggest to right click in pin view onto the "Port" header and select "auto-assign during build". This will clear all pin errors.
Can you describe more since I am a newbie on this platform?
I am just using one SCB for I2C, am I right?
Welcome in the fascinating world of PSoCs!
The SCBs have limited routing capabilities, few alternatives only. In your original post you used pins which were dedicated to two different SCBs. When selecting a pin for a signal (using the port column) you will see a list of components for which the pin is valid.#
It is always a good choice to let the fitter choose at first the pin assignments and after a successful build adapting the result (step by step) to your own needs.