hich statement on posting groups is correct? A general product posting group must be assigned to each G/L account. It is not possible to set up the combination of a blank general business posting group with a general product posting group on the General Posting Setup page. It is possible to set up different income statement accounts for sales invoices and sales credit memos on the General Posting Setup page without creating different posting groups. A new vendor posting group can be set up by copying from an existing vendor posting group