For References, first you need to run the Account reference (in GL setup) for the selected tables and inquire the respective ledger accounts. to view the references of the ledger account in the related tables and in which field and related key values.
Validation list will be active only if - currencty is selected and in validate currency code - List is selected like the way for Dimension-List etc…
Send electronically - we need to setup endpoints in basic module under AIF to copy or export the COA data…