Purchase invoices

Use the Purchase invoices form to register the purchase invoices you receive from your suppliers. A purchase invoice consists of:

• A purchase invoice header, containing general invoice data, such as the total sum, the VAT, and the supplier who sent the invoice
• Purchase invoice lines, containing data relating to the parts, equipment, and external operations charged on the purchase invoice

To add purchase invoices, click on the Purchase invoices form. Purchase invoices are numbered automatically.

Note: When the purchase invoice is saved, Isah checks for the combination of creditor code and reference. This is done to avoid duplicate entries of invoices you have received from your suppliers. If the combination already exists, the following message is displayed: 'Creditor/reference combination already exists. Continue anyway?'

Tip: The code format is defined on the Codes form in the General Settings module.

Note: If you receive a purchase invoice to which multiple VAT codes apply, click the VAT sums button to enter these VAT codes.

Once you have added the purchase invoice and the lines, the purchase invoice has been registered, but not posted yet. Therefore, no journal entries have been created either. To post the purchase invoice, use the Provisionally process purchase invoices or Permanently process purchase invoices process.

Note: Once you have processed a purchase invoice permanently, the process cannot be undone. No changes can be made to a processed purchase invoice. You can only add remarks on the Memo tab.