How to Add Split Button on Admin Sales Order View Page in Magento 2

A split button is a UI component where the user can select the displayed option or any other option from the drop-down list. The displayed option is the one that is frequently used by most of the users. The drop-down list shows the options that are very rarely used. The admin sales order view page is where the store owner can see all the details of the orders placed by the customers. Sometimes, the Magento 2 store has a need to add a split button in the admin sales order view page.

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