.. _1.1:

1.1. Primary identifier
====================

======== ==========
Required Repeatable
======== ==========
Yes      No
======== ==========

**Definition:** A DataCite DOI is required. This is a globally unique and resolvable persistent identifier assigned to the data asset. 

*Metadata fields:*

.. contents:: :local:

.. rubric:: Example DataCite XML

.. code:: xml

 <identifier identifierType="DOI">10.1080/15588742.2015.1017687</identifier>

.. _1:

DataCite 1 Identifier
~~~~~~~~~~~~~~~~~~~~~~

**Occurrences:** 1

**Input Type** Text

**Example Input** 10.1080/15588742.2015.1017687

**Controlled vocabulary source** Nil

**Notes:**


.. _1.a:

1.a identifierType
~~~~~~~~~~~~~~~~~~~~~~

DataCite 1.a Identifier Type

**Occurrences:** 1

**Input Type** Text

**Example Input** MUST be “DOI”

**Controlled vocabulary source** DataCite

**Notes:**