Why is there a space between the first name and the last name when buying life insurance in the Pacific? Is it a requirement or a mistake?

Very simple

For example, your name is Wang Erxiao.

Wang is your surname.

That's the name of the second primary school.

Let you use a space to separate Wang (surname) from the second primary school (first name).

After separation is:

wang erxiao

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.