For invoices received from domestic subjects (the purchase method is set on Home – registered for VAT or Home – Other), the module works in the following way:

1. The program checks for each invoice, to which document type it belongs. When the document type is found it continues with work on the basis of data entered in the settings of inventory accounts and VAT accounts.
2. The total amount of the bill is posted to the credit side of the account selected in the Account (supplier) field of the document type. The account payable may optionally be changed in the receiving document. When the Posting Payables from the Payment Method Register checkbox in the Administrator panel is checked  you can post to the account payable from thePayment Methods register. Payment in installments is also posted in the same way.
3. For each bill item the program checks the Items register to verify to which item type it belongs.
4. With the familiar item type it is checked in the table of inventory accounts, which accounts are defined to be kept in recorded purchase.
5. The value of the supplier invoice is posted to the account as defined in the column Supplier's inventory account DR ( DB-DR in the scheme).
6. The value of transport costs from the purchase calculation is posted to the account as defined in the column Transport (DB-TR in the scheme).
7. The value of dependent costs from the purchase calculation is posted to the account as defined in the column Dependent costs DB (DB-DC in the scheme).
8. The total purchase value of goods from the item is posted to the temporary account as specified in the column  Transfer Goods to Stock CR  (CR-INV in the scheme).
9. Contra-entry of the total purchase value of the goods is posted to the account as specified in the column Inventory Account for Material/Goods inventory (DB-INV in the scheme).
10. The total value of the included dependent costs and transport is posted to the account as specified in the column Imputed Dependent Costs CR  (CR-DC in the scheme).
11. The program checks in each invoice line, which tax type is entered there. In the  VAT account panel of the Document Types register it can be observed to which account should the tax claim be posted.
12. Considering the purchase method specified in the document, the program recognizes, to which tax account should the tax claim be posted.

The appropriate data are automatically entered in the journal entry line when automatically posting invoices issued. Here are of course used predefined validations of post from the Chart of Accounts.

Flow Chart of Posting Domestic Supplier invoice: