How to Add Custom Message to Admin Sales Order View, Invoice, and Credit Memo in Magento 2

Magento 2 store administrators not only strive to create a convenient shopping experience for their customers but also continuously implement various tactics to enhance the usability of their admin panel.

By default, Magento 2 offers a user-friendly interface and customizable features to empower administrators in efficiently managing their stores and meeting their specific requirements.

Store admins often seek to improve their admin panels by customizing functionalities, adding custom messages, modifying columns, applying filters, or removing them from the grid, among other adjustments.

One such example I will discuss here is add custom message to admin sales order view, invoice, and credit memo in Magento 2, For instance, you might want to display a personalized message when processing an order that includes a gift, providing relevant information for administrators within the admin panel.

For more information, please visit this:- https://meetanshi.com/blog/add-custom-message-to-admin-sales-order-view-invoice-credit-memo-in-magento-2/