Relevance of Low Level Code in PP

Hello Experts,

Warm Greetings!!

I am here with a query on Low Level Code. I have a basic idea of what Low Level Codes are and how they are calculated within a BOM. Let us say, a BOM is created and the same has been consumed by a Sales Order.

Below are my questions in this context.

1. Is Low Level Code mandatory during Sales Order Costing? If Yes, Why?

2. If No, How to facilitate Costing without Low Level Code?

Looking forward to all your answers.

Thanks a trillion in advance.

Best Regards,

Ram