Hi
Have you already signed an NDA with NXP? If you are unsure whether company has signed an NDA with NXP, please tell me company's full name or address.
If you already have a valid NDA, please refer to this document to register a Secure File account.
Once you have Secure File access, you can click on Secure in the documentation section of the S32K3 product page and download the Safety Manual.
Best Regards,
Robin