What type of training is not accepted as a substitute?

The training referred to in the question, specifically the Penal Code Section 832 training, is foundational training required for individuals wishing to become a security officer in California. This training focuses on the laws and legal aspects of using force and firearms, which is essential for security personnel's role within the legal framework. Since this training covers specific legal requirements and the understanding of the law, it cannot be substituted with other training programs that focus on different aspects of security work, such as tactics or emergency response.

In contrast, training programs like basic firearm training, advanced tactical training, or first aid training, while important and valuable, are supplementary and for specific skills enhancement rather than a replacement for the legal knowledge and requirements established by Penal Code Section 832. Therefore, this type of training is critical and cannot be bypassed or substituted, making it the correct answer to the question.