diff --git a/Scripts/lint_validation.py b/Scripts/lint_validation.py
index 21db22d..7e6f661 100644
--- a/Scripts/lint_validation.py
+++ b/Scripts/lint_validation.py
@@ -5,21 +5,20 @@ from collections import defaultdict
 REPO_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
 XML_DIR = os.path.join(REPO_ROOT, 'XML')
 
-def check_order_attribute_conditionally(tree):
-    """Checks for conditional presence of the 'order' attribute."""
+def validate_stueck_constraints(tree):
+    """Performs all custom validation checks for <stueck> elements."""
     errors = []
     root = tree.getroot()
-    
     ns = {'kgpz': 'https://www.koenigsberger-zeitungen.de'}
 
+    # --- Rule 1: Check for conditional 'order' attribute on single-page entries ---
     stuecke_without_bis = root.xpath('//kgpz:beitrag/kgpz:stueck[not(@bis)]', namespaces=ns)
-
-    groups = defaultdict(list)
+    groups_single_page = defaultdict(list)
     for stueck in stuecke_without_bis:
         key = (stueck.get('when'), stueck.get('nr'), stueck.get('von'))
-        groups[key].append(stueck)
+        groups_single_page[key].append(stueck)
 
-    for key, stuecks in groups.items():
+    for key, stuecks in groups_single_page.items():
         if len(stuecks) > 1:
             for stueck in stuecks:
                 if stueck.get('order') is None:
@@ -28,6 +27,23 @@ def check_order_attribute_conditionally(tree):
                         f"(when='{key[0]}', nr='{key[1]}', von='{key[2]}') but is missing the 'order' attribute."
                     )
                     errors.append(error_msg)
+
+    # --- Rule 2: Check for uniqueness of multi-page jumps ---
+    stuecke_with_bis = root.xpath('//kgpz:beitrag/kgpz:stueck[@bis]', namespaces=ns)
+    groups_multi_page = defaultdict(list)
+    for stueck in stuecke_with_bis:
+        key = (stueck.get('when'), stueck.get('nr'), stueck.get('von'), stueck.get('bis'))
+        groups_multi_page[key].append(stueck)
+
+    for key, stuecks in groups_multi_page.items():
+        if len(stuecks) > 1:
+            error_msg = (
+                f"Custom Validation Error: Found {len(stuecks)} identical multi-page <stueck> tags. "
+                f"The combination of attributes (when='{key[0]}', nr='{key[1]}', von='{key[2]}', bis='{key[3]}') must be unique. "
+                f"Duplicate found on line {stuecks[1].sourceline}."
+            )
+            errors.append(error_msg)
+            
     return errors
 
 def validate_xml(xml_file):
@@ -49,7 +65,7 @@ def validate_xml(xml_file):
                 print(f"XSD Validation successful: {xml_file}")
 
                 # Perform custom validation after XSD check
-                custom_errors = check_order_attribute_conditionally(tree)
+                custom_errors = validate_stueck_constraints(tree)
                 if custom_errors:
                     errors.extend(custom_errors)
                 else:
diff --git a/XSD/beitraege.xsd b/XSD/beitraege.xsd
index 8d1d0d0..dd81ca3 100644
--- a/XSD/beitraege.xsd
+++ b/XSD/beitraege.xsd
@@ -104,15 +104,5 @@
       <xsd:selector xpath="kgpz:beitrag" />
       <xsd:field xpath="@id" />
     </xsd:unique>
-    <xsd:unique name="uniqueStueckJump">
-      <xsd:annotation>
-        <xsd:documentation>Ein Beitrag kann nur einmal von einer Seite auf eine andere springen (Kombination aus when, nr, von und bis muss eindeutig sein).</xsd:documentation>
-      </xsd:annotation>
-      <xsd:selector xpath="kgpz:beitrag/kgpz:stueck"/>
-      <xsd:field xpath="@when"/>
-      <xsd:field xpath="@nr"/>
-      <xsd:field xpath="@von"/>
-      <xsd:field xpath="@bis"/>
-    </xsd:unique>
   </xsd:element>
 </xsd:schema>
\ No newline at end of file