Hi @leo_Z
This HOWTO was implemented using RTD version 2.0.0, and several changes have been introduced in subsequent releases. As a result, some discrepancies may appear when following the instructions with newer versions.
The Siul2_Icu_Ip_Init() function error message is displayed due to a mismatch in the expected configuration parameter. The parameter passed to the function does not exist under the expected name—it was generated with a different identifier.
For example, instead of using: Siul2_Icu_Ip_0_Config_PB_BOARD_InitPeripherals. You should use: Siul2_Icu_Ip_0_Config_PB. This correct configuration can be found in the Siul2_Icu_Ip_SA_PBcfg.h file.
For better reference, I recommend reviewing the Siul2_Icu_Ip_BlinkLed_S32K344 example. It implements the same application as described in the HOWTO. This example is included with the RTD package and can be easily accessed when creating a new project from an example
BR, VaneB