If you want to determine that a fiscal year is to be proposed while displaying the document and for document change function in SAP then the system uses the year that is last used by the user and default the same while entering a document. This option is only useful for company codes working with year-dependent document number ranges so you need to select this option for the company codes using a year-dependent document number range.
Path for making the fiscal year as a default: SPRO > Financial Accounting > Financial Accounting Global Settings > Document > Default Values for Document Processing > Enable Fiscal Year Default
Default Value Date
The line item that you enter while entering a document needs a value date to enter. You can always determine the system value date as the default value date for your line item entry in a document. To do this please follows the following path;
Path for making the value date as a default: SPRO > Financial Accounting > Financial Accounting Global Settings > Document > Default Values for document processing > Define Value Date Default