diff --git a/lib/isodoc/iso/i18n-en.yaml b/lib/isodoc/iso/i18n-en.yaml
index fd9054c0..df2056b7 100644
--- a/lib/isodoc/iso/i18n-en.yaml
+++ b/lib/isodoc/iso/i18n-en.yaml
@@ -33,6 +33,7 @@ classification-UDC: UDC
 website: website
 formerly_id: "(formerly %)"
 was_developed_by: "%1 was developed by %2"
+iso-cen-parallel: ISO/CEN PARALLEL PROCESSING
 doctype_dict:
   international-standard: International Standard
   technical-specification: Technical Specification
diff --git a/lib/isodoc/iso/i18n-fr.yaml b/lib/isodoc/iso/i18n-fr.yaml
index e6bded54..99b5da9e 100644
--- a/lib/isodoc/iso/i18n-fr.yaml
+++ b/lib/isodoc/iso/i18n-fr.yaml
@@ -30,6 +30,7 @@ fast-track-procedure: Procédure accélérée
 classification-UDC: CDU
 formerly_id: "(précédemment %)"
 was_developed_by: "%1 a été élaboré par %2"
+iso-cen-parallel: TRAITEMENT PARALLÈLE ISO/CEN
 website: site web
 doctype_dict:
   international-standard: Norme internationale
diff --git a/lib/metanorma/iso/front.rb b/lib/metanorma/iso/front.rb
index ae91ae2c..f6e5f359 100644
--- a/lib/metanorma/iso/front.rb
+++ b/lib/metanorma/iso/front.rb
@@ -22,6 +22,7 @@ def metadata_ext_iso(node, xml)
           xml.updates_document_type a
         a = node.attr("fast-track") and xml.send "fast-track", a != "false"
         a = node.attr("price-code") and xml.price_code a
+        node.attr("iso-cen-parallel") and xml.iso_cen_parallel true
       end
 
       STAGE_ERROR = [Pubid::Core::Errors::HarmonizedStageCodeInvalidError,
diff --git a/spec/metanorma/base_spec.rb b/spec/metanorma/base_spec.rb
index dbd3b3bd..f43e84b1 100644
--- a/spec/metanorma/base_spec.rb
+++ b/spec/metanorma/base_spec.rb
@@ -77,6 +77,7 @@
       :horizontal: true
       :fast-track: true
       :price-code: XC
+      :iso-cen-parallel:
     INPUT
     output = <<~OUTPUT
       <bibdata type="standard">
@@ -274,6 +275,7 @@
           <stagename abbreviation="WD">Working Draft International Standard</stagename>
           <fast-track>true</fast-track>
           <price-code>XC</price-code>
+          <iso-cen-parallel>true</iso-cen-parallel>
         </ext>
       </bibdata>
     OUTPUT