ORFA asset accounting configuration component

Hi Forum,

I would like to get advice on the main path in ORFA asset accounting IMG.

I have read the help at each of the main path below but I still not so sure the purpose for each of the component below.

1) Valuation

2) Special Valuation

3) Transactions

I need help from forum to provide me a short explanation for each of the above. Do not copy from F1.

Thanks