Go to Finance - Suppliers and Partners section. Click the Excel operations button and select the Upload from Excel button. Copy data from the Excel spreadsheet and paste it into the input field and click the Upload button.
In the new window match the data with the names of the table: Name, Individual Taxpayer Number, Classifier of Industrial Enterprises, Contact Person, Phone, Email, Address and Comment. Click the Save button.
You can upload no more than 500 lines of the spreadsheet at one go.