The document data always vary per customer or invoice. In the below image, you can see that you have different details to add such as customer number, VAT number, delivery date, specifications, references, etc. All this data can be easily removed and added as per invoice requirements. Here is the step by step instruction guide on how to add or remove data in an invoice document.
Step 4: Now, Open a new invoice and you will see that the selected options are enabled and deselected options are disabled.