About the Invoice System

The system stores the list of categories, products, services, and invoices. The invoices that will be store or generated in this system has 2 types which are the product invoice and service invoice. The system automatically generates a random invoice code but also editable and has a validation to check the code availability. After the invoice is saved, then a new window will pop up that contains the printable generated invoice. The dashboard displays the summary of the list stored inside the database. When listing the items of products or services in creating an invoice, the system has error trapping features to prevent human errors to result in system errors.