diff --git a/.github/ISSUE_TEMPLATE/amendment-proposal.yml b/.github/ISSUE_TEMPLATE/amendment-proposal.yml
index 99efbeb..00b6898 100644
--- a/.github/ISSUE_TEMPLATE/amendment-proposal.yml
+++ b/.github/ISSUE_TEMPLATE/amendment-proposal.yml
@@ -5,7 +5,7 @@ body:
   - type: markdown
     attributes:
       value: The content in this issue, excluding the initial request, will be kept up to date during the drafting of the proposal. Please pay attention to accuracy, spelling and grammar as it may be referenced in an official document for WMO adoption. 
- - type: textarea
+  - type: textarea
     id: introduction
     attributes:
       label: Introduction
@@ -70,4 +70,4 @@ body:
     attributes:
       label: References
       description: Other publications, websites or resources that were reviewed during the drafting of the proposal.
-      placeholder: Enter references reviewed. 
\ No newline at end of file
+      placeholder: Enter references reviewed. 
diff --git a/C14.csv b/C14.csv
index abc6cb2..c53e076 100644
--- a/C14.csv
+++ b/C14.csv
@@ -491,7 +491,12 @@ CodeFigure,Meaning_en,ChemicalFormula,Status
 30363,Yttrium 94,Y-94,Operational
 30364,Yttrium 95,Y-95,Operational
 30365,Zirconium 96,Zr-96,Operational
-30366-39999,Reserved,,Operational
+30366,Indium 117,In-117,Extension
+30367,Lead 203,Pb-203,Extension
+30368,Sodium 24,Na-24,Extension
+30369,Ruthenium 107,Ru-107,Extension
+30370,Uranium 239,U-239,Extension
+30371-39999,Reserved,,Operational
 40000,Singlet sigma oxygen (dioxygen (sigma singlet)),O2(1Σ+g),Operational
 40001,Singlet delta oxygen (dioxygen (delta singlet)),O2(1Δg),Operational
 40002,Singlet excited oxygen atom,O(1D),Operational
diff --git a/xml/C14.xml b/xml/C14.xml
index be12a1d..4cd007c 100644
--- a/xml/C14.xml
+++ b/xml/C14.xml
@@ -2953,7 +2953,37 @@
     <Status>Operational</Status>
   </C14>
   <C14>
-    <CodeFigure>30366-39999</CodeFigure>
+    <CodeFigure>30366</CodeFigure>
+    <Meaning_en>Indium 117</Meaning_en>
+    <ChemicalFormula>In-117</ChemicalFormula>
+    <Status>Extension</Status>
+  </C14>
+  <C14>
+    <CodeFigure>30367</CodeFigure>
+    <Meaning_en>Lead 203</Meaning_en>
+    <ChemicalFormula>Pb-203</ChemicalFormula>
+    <Status>Extension</Status>
+  </C14>
+  <C14>
+    <CodeFigure>30368</CodeFigure>
+    <Meaning_en>Sodium 24</Meaning_en>
+    <ChemicalFormula>Na-24</ChemicalFormula>
+    <Status>Extension</Status>
+  </C14>
+  <C14>
+    <CodeFigure>30369</CodeFigure>
+    <Meaning_en>Ruthenium 107</Meaning_en>
+    <ChemicalFormula>Ru-107</ChemicalFormula>
+    <Status>Extension</Status>
+  </C14>
+  <C14>
+    <CodeFigure>30370</CodeFigure>
+    <Meaning_en>Uranium 239</Meaning_en>
+    <ChemicalFormula>U-239</ChemicalFormula>
+    <Status>Extension</Status>
+  </C14>
+  <C14>
+    <CodeFigure>30371-39999</CodeFigure>
     <Meaning_en>Reserved</Meaning_en>
     <ChemicalFormula/>
     <Status>Operational</Status>