Modify Customized DocType Sales Order


I have created a customized doctype Cake Order from Sales Order but cannot Save the modified fields because of the messages below:

You can’t set ‘Options’ for field Amended From

Fieldname amended_from appears multiple times in rows 9, 118

I checked and sure the 2 rows exist the later being a duplicate. What should happen when a custom doctype is created.

ERPNext: v8.11.0 (master)
Frappe Framework: v8.10.0 (master)

Thanks in Advance

Perhaps this can help.

Thanks, I had actually read the tutorial.

It turns out I should just add/remove the fields from the DocType List as opposed to using Customize feature.