If this indicator is ticked in the Purchase Order, then no financial posting
is made at the time of posting a Goods
Receipt.
The only posting would occur on Invoice Receipt.
It is commonly used for purchasing of fixed assets, because in most countries
you do not post
the acquisition until you have the legal back-up in the form of the supplier's
invoice.
Also, it is not desirable to post an estimated value (based on the GR) plus a
correction
(based on the IR).
Whether should you used non-valuated Goods Receipts or not would certainly
depends on your
company's financial policies.