In case others find this thread and reads the prior reply, It looks to be about Finance and Operations. Copilot looks to have limited knowledge about Brazil localization hence why it has some incorrect information. However if it's from Business Central I stand corrected.
To the original poster, if you mention your product in question I can move it to the product specific forum.
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Background:
Brazil functionality is found under Fiscal Books.
The dialog does not contain the fiscal year: