Improvements

It would be very good if the percentage indicated in each rate were applied to the main rate. This would avoid manually calculating all rates for all products.

This would make it possible to add other costs associated with a product such as handling, transport, installation, etc.

What does the customer need? You need to be able to have the purchase price of a product saved, plus the discount your supplier gives you for that product Why do you need it? You always buy from the same supplier, when creating delivery notes you need to be able to automatically add the purchase price of the product, plus the discount they have given you for each product. Currently, you add the discount manually, since you can't import a packing slip or use the scanner.

Have a code that appears on the invoice, be able to add notes, files, buyer reports, price rates, etc. If you need to perform these actions, the recommendation for now would be to create the services as if they were Holded products (without stock management) and add a 'tag' to recognize them.

To be able to have a history of the changes made in sales prices to have a report of the changes made in the price of the product. Have an option to apply in the customer file or when the customer indicates in the document to remember the last sale price.

This column would be added within the editor and could give the user a value that they could customize so that together with the other columns, they subtract, add, multiply or divide. This way you could: rent 3 days, 4 screens for 20 euros per screen per day

If you have purchased a product or want to buy a product, you can download the product's technical data sheet, among other documents.

Being able to have an alarm or notification when a lot is about to expire so you can pick it up or sell it.

Add the column with the warehouse information indicated in each purchase order. This information already appears in the sales order table