If on the purchase invoice, the invoice number and supplier already exist, MetaKocka will warn you about that.

1. Settings/Your Company

Go to Settings/Your Company

2. Enabling the option ''Prevent saving the same supplier invoice for a business year'''

Tick the option ''Prevent saving the same supplier invoice for a business year''

Save your changes

3. Prevent saving the same supplier invoice for a business year

If a purchase invoice is created with an already existing invoice number and supplier, MetaKocka will not save that invoice and will simultaneously warn you that such an invoice already exists.