Hi,

The Internal Notes section is meant only for internal use and will not be visible to the customer. Suppose you want the product variant details (or any specific information) to appear in the sales documents, such as quotations or sales orders. In that case, you must include that information in the 'Quotation Description' field.

To do this, go to the Sales tab on the product form view and enter your desired content in the Quotation Description field. This text will be shown in the product line of the quotation/sales order, allowing the customer to see the relevant variant or other important details.

Hope it helps