Chart of account for Bulgaria

Hello,
As there is no ready chart of account for Bulgaria and I’m gonna make one I have some questions because I need explanations. I will use the option for import and I will create XLSX file based on the one I took as an example, but

In the field (aa.fk_pcg_version) what is the meaning of the code and how to make it? How to make it if there is any special meaning?

PCG TYPE - mandatory field? Making new CoA can I use mine own like Assets, Liabilities etc… instead of the one used in the example? And can I input them in Bulgarian?

Thanks in advance,

Regards