How to differentiate between goods and service invoices in the Peppol format

Hi Team,

We are currently loading E-Invoices using the Peppol BIS 3.0 format. We have mapped tax classification codes in Oracle, and the tax codes are being extracted from the E-Invoice file.

In the E-Invoices, we receive different tax codes such as S (Standard) and E (Exempt). For reverse charge scenarios, we receive the tax code K for both goods and services.Since we have separate tax classification codes in Oracle for goods and services, we would like to understand how to differentiate between goods and service invoices in the Peppol format