In a submitted Sales Order, you can see multiple options under the 'Create' option:
You can use this custom script to rename the buttons:
Using this script, we have removed/hidden the unwanted buttons, and then renamed one:
Note: To learn more about the JS APIs, visit the frappe documentation.
To check the method which is called, you will need to check JS file for that doctype.
Updated on: 01 / 02 / 2022