Enter Vendor Invoices You may enter invoices as received from your vendor, to be paid later using print checks. For Batch invoicing, select it and read the help file on the next window. Usually you will Enter Invoices Immediately, especially if you need to distribute to Job/Crop Cost. To record an invoice and write a check at the same time, use the AP Print Expense Check feature, and select a vendor already in the Vendor Master file. A Credit Invoice is an invoice with a negative amount. Use Enter Invoices Immediately to make a Credit Invoice, and you may apply it at that time, or use Apply Credits to Apply to other invoices.