general updates

mirima2 · Apr 3, 2018 · de913a9 · de913a9
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diff --git a/docs/source/field_access_rights.rst b/docs/source/field_access_rights.rst
@@ -21,14 +21,14 @@ Provide a rights management statement for the resource or reference a service pr
 
    *Mandatory* property in OpenAIRE instead of optional in DataCite.
 
-   OpenAIRE uses this property to explicit declare the access right of the resource via :ref:`d:rightsuri`. 
+   OpenAIRE uses this property to explicitly declare the access right of the resource via :ref:`d:rightsuri`. 
 
 
 .. _d:rightsuri:
 
 18.1 rightsURI (M)
 -------------------
-The URI of the license (occurrences: 0-1).
+The URI of the license (occurrences: 1).
 
 **Allowed values, examples, other constraints**
 
@@ -44,12 +44,9 @@ The URI of the license (occurrences: 0-1).
 
 .. note::
 
-   *Mandatory when applicable* property in OpenAIRE instead of optional in DataCite.
-
    This property should not be used to explicitly declare the license for the resource, for this refer to section :ref:`oas:licenceCondition`.
 
 
-
 **Examples**
 
 

diff --git a/docs/source/field_relation.rst b/docs/source/field_relation.rst
@@ -22,6 +22,7 @@ The type of the related identifier
 * ``EAN13``
 * ``EISSN``
 * ``Handle``
+* ``IGSN``
 * ``ISBN``
 * ``ISSN``
 * ``ISTC``