diff --git a/lib/adiwg/mdtranslator/readers/iso19115_2/modules/module_metadata.rb b/lib/adiwg/mdtranslator/readers/iso19115_2/modules/module_metadata.rb
index 39c5dbb7..3b1773a1 100644
--- a/lib/adiwg/mdtranslator/readers/iso19115_2/modules/module_metadata.rb
+++ b/lib/adiwg/mdtranslator/readers/iso19115_2/modules/module_metadata.rb
@@ -11,6 +11,8 @@ module Iso191152
             module Metadata
                @@identificationInfoXPath = 'gmd:identificationInfo'
                @@dataIdentificationXPath = 'gmd:MD_DataIdentification'
+               @@fileIdentifierXPath = 'gmd:fileIdentifier//gco:CharacterString'
+               @@parentIdentifierXPath = 'gmd:parentIdentifier//gco:CharacterString'
                def self.unpack(xMetadata, hResponseObj)
                   intMetadataClass = InternalMetadata.new
                   intMetadata = intMetadataClass.newMetadata
@@ -42,6 +44,12 @@ def self.unpack(xMetadata, hResponseObj)
 
                   intMetadata[:resourceInfo] = ResourceInformation.unpack(xDataIdentification, hResponseObj)
 
+                  fileIdentifier = xMetadata.xpath(@@fileIdentifierXPath)[0]
+                  intMetadata[:fileIdentifier] = fileIdentifier.text unless fileIdentifier.nil?
+
+                  parentIdentifier = xMetadata.xpath(@@parentIdentifierXPath)[0]
+                  intMetadata[:parentIdentifier] = parentIdentifier.text unless parentIdentifier.nil?
+
                   # :distributorInfo
                   # :associatedResources
                   # :additionalDocuments
diff --git a/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_identifier.rb b/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_identifier.rb
index 040981a0..a7f4f15f 100644
--- a/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_identifier.rb
+++ b/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_identifier.rb
@@ -5,19 +5,20 @@ module Dcat_us
             module Identifier
 
                def self.build(intObj)
+                  fileIdentifier = intObj.dig(:metadata, :fileIdentifier)
+                  return fileIdentifier unless fileIdentifier.nil?
+
                   citation = intObj.dig(:metadata, :resourceInfo, :citation)
                   identifiers = citation&.dig(:identifiers)
                   onlineResources = citation&.dig(:onlineResources)
                   uri = onlineResources.dig(0, :olResURI)
                 
-                  # return uri if it exists, or the first identifier found
+                  # uri is supposed to be more descriptive than identifiers
                   return uri unless uri.nil?
                   return identifiers[0][:identifier] unless identifiers.nil? || identifiers.empty?
 
                   nil
                end
-                                    
-
             end
          end
       end
diff --git a/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_is_part_of.rb b/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_is_part_of.rb
index c0986fd0..26ff232e 100644
--- a/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_is_part_of.rb
+++ b/lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_is_part_of.rb
@@ -7,6 +7,9 @@ module Dcat_us
             module IsPartOf
 
                def self.build(intObj)
+                  parentIdentifier = intObj.dig(:metadata, :parentIdentifier)
+                  return parentIdentifier unless parentIdentifier.nil?
+
                   associatedResources = intObj.dig(:metadata, :associatedResources)
                 
                   associatedResources.each do |resource|
diff --git a/test/readers/iso19115_2/testData/iso19115-2.xml b/test/readers/iso19115_2/testData/iso19115-2.xml
index 320780fe..d7046048 100644
--- a/test/readers/iso19115_2/testData/iso19115-2.xml
+++ b/test/readers/iso19115_2/testData/iso19115-2.xml
@@ -20,7 +20,12 @@
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.isotc211.org/2005/gmi
         ftp://ftp.ncddc.noaa.gov/pub/Metadata/Online_ISO_Training/Intro_to_ISO/schemas/ISObio/schema.xsd">
-
+  <gmd:fileIdentifier>
+    <gco:CharacterString>ISO19115-2-ID-123456</gco:CharacterString>
+  </gmd:fileIdentifier>
+  <gmd:parentIdentifier>
+    <gco:CharacterString>ISO19115-2-ID-123456-parent</gco:CharacterString>
+  </gmd:parentIdentifier>
   <gmd:identificationInfo>
     <gmd:MD_DataIdentification>
       <gmd:citation>
diff --git a/test/translator/tc_iso19115_2_to_dcatus.rb b/test/translator/tc_iso19115_2_to_dcatus.rb
index ba17cfa6..4f2a30c9 100644
--- a/test/translator/tc_iso19115_2_to_dcatus.rb
+++ b/test/translator/tc_iso19115_2_to_dcatus.rb
@@ -9,7 +9,6 @@
 require 'adiwg/mdtranslator'
 require 'adiwg/mdtranslator/readers/iso19115_2/modules/module_iso19115_2'
 require 'adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_dcat_us'
-require 'debug'
 
 # these tests are organized according to how data is processed in
 # the dcat_us writer lib/adiwg/mdtranslator/writers/dcat_us/sections/dcat_us_dcat_us.rb
@@ -93,4 +92,16 @@ def test_theme
       res = dcatusNS.build(@@intMetadata)
       assert_equal('biota farming', res)
    end
+
+   def test_identifier
+      expected = 'ISO19115-2-ID-123456'
+
+      assert_equal(expected, @@intMetadata[:metadata][:fileIdentifier])
+   end
+
+   def test_is_part_of
+      expected = 'ISO19115-2-ID-123456-parent'
+
+      assert_equal(expected, @@intMetadata[:metadata][:parentIdentifier])
+   end
 end
diff --git a/test/translator/testData/iso19115-2.xml b/test/translator/testData/iso19115-2.xml
index 320780fe..d7046048 100644
--- a/test/translator/testData/iso19115-2.xml
+++ b/test/translator/testData/iso19115-2.xml
@@ -20,7 +20,12 @@
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.isotc211.org/2005/gmi
         ftp://ftp.ncddc.noaa.gov/pub/Metadata/Online_ISO_Training/Intro_to_ISO/schemas/ISObio/schema.xsd">
-
+  <gmd:fileIdentifier>
+    <gco:CharacterString>ISO19115-2-ID-123456</gco:CharacterString>
+  </gmd:fileIdentifier>
+  <gmd:parentIdentifier>
+    <gco:CharacterString>ISO19115-2-ID-123456-parent</gco:CharacterString>
+  </gmd:parentIdentifier>
   <gmd:identificationInfo>
     <gmd:MD_DataIdentification>
       <gmd:citation>