Custom Field/Code on invoices

Hi @michiko3343,

In WooCommerce it is possible to create your own custom fields & in turn, show these custom fields on your invoice. These custom fields can be created in your order details screen.
You’d need to follow along this guide to display the custom filed you created: https://docs.wpovernight.com/woocommerce-pdf-invoices-packing-slips/displaying-a-custom-field/#with-a-template-action-hook

I was also wondering if the Product Batch Numbers plugin might pique your interest as it sounds like it might be an easier solution (no coding involved): https://wpovernight.com/downloads/woocommerce-product-batch-numbers/