Hi@haansy
1.These are two different versions and you need to install the corresponding development environment
1)SW32K3_BMS_SDK_4.4_R21-11_1.0.2 & SW32K3_BMS_SL_SDK_4.4_R21-11_1.0.2_DEMO

2) SW32K3_BMS_SDK_4.4_0.9.0_updatesite_D2210.zip &SW32K3_BMS_SL_SDK_4.4_0.9.0_DEMO
• Install S32 Design Studio IDE v3.4
• Install the Update Site for S32K3 Real Time Drivers AUTOSAR 4.4 Version 2.0.0:

2. The two files you mentioned do not exist in the driver we provide.
"CDD_Bcc_774a_SL.c, CDD_Bms_TPL3_SL_E2E.c"
But we provide
"CDD_Bcc_774a_SL.h, CDD_Bms_TPL3_SL_E2E.h"
Please double check or provide a screenshot.