_item.mandatory_code

Name:
'_item.mandatory_code'

Definition:

   
     Signals whether the defined item is mandatory for the proper description
     of its category.

Type: code

Mandatory item: yes

The data value must be one of the following:

yes required item in this category

`no`	optional item in this category

implicit required item but may be determined from context

Category: item

Crystallographic Information Framework