Fiscal Classifications

Hallo,

the question that I would like to share is applicable to all transactions, specifically in Account Receivables area, that need a fiscal classification due to local legal requirements: we know there ad hoc fields dedicated to fiscal classification values that need to be filled in "Tax Information" window of the transaction. The point is: for invoices done from a Sales Order how we can enter these fiscal classification values? Should we open each single invoice generated from OM and manually enter these values or there is an automatic way to derive those values without doing it manually?

Thanks in advance for any suggestion or input you may share.