In Raja Yoga meditation, there is a belief that on the Judgement Day, Paramatma (the Supreme Soul) will take back 99.99% of the human population to Shantidham, which is considered the abode of all souls. It is during Sangama Yuga Paramatma will teach Raja Yoga meditation and transform individuals into Devathas, meaning humans with divine qualities, characters, and eight divine powers known as Ashta Shakthi.
According to this belief, when these transformed individuals enter Sathya Yug, their actions and karma become Akarma, which means that no merit or demerit is attached to their actions. The idea is that they are free from the cycle of cause and effect and are unaffected by the consequences of their actions.
In this context, the question arises whether this act of taking back 99.99% of the human population to Shantidham would add sin to Paramatma Himself.
According to the understanding of Paramatma's role in this belief system, it is believed that Paramatma's knowledge and actions are focused on performing acts that do not bring sin to anyone. Paramatma is considered Viswa Kalyanakari, meaning the one who does good to the world. As such, it is believed that Paramatma's intention is not to accumulate sin or negative karma but to guide humanity towards spiritual upliftment and liberation from the cycle of birth and death.
Therefore, based on this understanding, it is believed that Paramatma's act of taking back individuals to Shantidham and transforming them into Devathas would not add sin to Paramatma Himself. Instead, it is seen as an act of grace and benevolence aimed at facilitating the spiritual progress of humanity.
It's important to note that the beliefs and interpretations of different spiritual and religious systems can vary, and this explanation is based on the understanding presented in the context of Raja Yoga meditation as described in the question. Different individuals and traditions may have different perspectives on this topic.