Inventory Details from ECC to legacy system

Hi folks,

I have a requirement in my project, wherein, we are sending the inventory stock details from ECC to MES at the beginning of production go-live.

i.e. which storage location has which material and in what quantity, and in which batch.

Thereafter, in real-time, any update in the inventory like the following:

1) Goods Receipt and there is a credit

2) Goods Issue and there is a debit

3) Quality Inspection and the stock is moved to block/unrestricted/quality etc

4) Any other if you can suggest

What will be the best way for doing this?

I heard IDocs, but which is the Idoc that I can use for each of the requirements?

Regards,

Gita