diff --git a/pom.xml b/pom.xml
index 05a7fcec..1afaeaa4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -344,17 +344,17 @@
 										<limit>
 											<counter>COMPLEXITY</counter>
 											<value>COVEREDRATIO</value>
-											<minimum>0.42</minimum>
+											<minimum>0.43</minimum>
 										</limit>
 										<limit>
 											<counter>INSTRUCTION</counter>
 											<value>COVEREDRATIO</value>
-											<minimum>53%</minimum>
+											<minimum>53.5%</minimum>
 										</limit>
 										<limit>
 											<counter>LINE</counter>
 											<value>MISSEDCOUNT</value>
-											<maximum>1490</maximum>
+											<maximum>1480</maximum>
 										</limit>
 									</limits>
 								</rule>
diff --git a/src/test/java/com/datastax/cdm/cql/statement/TargetInsertStatementTest.java b/src/test/java/com/datastax/cdm/cql/statement/TargetInsertStatementTest.java
index 0b58e07f..867c9bc8 100644
--- a/src/test/java/com/datastax/cdm/cql/statement/TargetInsertStatementTest.java
+++ b/src/test/java/com/datastax/cdm/cql/statement/TargetInsertStatementTest.java
@@ -22,8 +22,10 @@
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
 
 import com.datastax.cdm.cql.CommonMocks;
+import com.datastax.cdm.properties.KnownProperties;
 import com.datastax.oss.driver.api.core.cql.*;
 import com.datastax.oss.driver.api.core.type.DataTypes;
 
@@ -343,4 +345,160 @@ public void bind_withNonEmptyMap_shouldCallSet() {
         verify(boundStatement, atLeastOnce()).set(anyInt(), any(), any(Class.class));
     }
 
+    // ---- bind(): input validation and bind-index ordering ----
+
+    /**
+     * When TTL columns are enabled but no TTL value is supplied, bind() rejects the input with a RuntimeException
+     * naming the missing TTL property.
+     */
+    @Test
+    public void bind_checkBindInputsThrowsWhenTtlMissing() {
+        when(writetimeTTLFeature.isEnabled()).thenReturn(true);
+        when(writetimeTTLFeature.hasTTLColumns()).thenReturn(true);
+        targetInsertStatement = new TargetInsertStatement(propertyHelper, targetSession);
+
+        RuntimeException ex = assertThrows(RuntimeException.class,
+                () -> targetInsertStatement.bind(originRow, targetRow, null, null, null, null));
+        assertEquals(KnownProperties.ORIGIN_TTL_NAMES + " specified, but no TTL value was provided", ex.getMessage());
+    }
+
+    /**
+     * When writetime columns are enabled but no writetime value is supplied, bind() rejects the input with a
+     * RuntimeException naming the missing writetime property.
+     */
+    @Test
+    public void bind_checkBindInputsThrowsWhenWriteTimeMissing() {
+        when(writetimeTTLFeature.isEnabled()).thenReturn(true);
+        when(writetimeTTLFeature.hasWritetimeColumns()).thenReturn(true);
+        targetInsertStatement = new TargetInsertStatement(propertyHelper, targetSession);
+
+        RuntimeException ex = assertThrows(RuntimeException.class,
+                () -> targetInsertStatement.bind(originRow, targetRow, null, null, null, null));
+        assertEquals(KnownProperties.ORIGIN_WRITETIME_NAMES + " specified, but no WriteTime value was provided",
+                ex.getMessage());
+    }
+
+    /**
+     * bind() binds every target column exactly once at sequential indices 0, 1, 2, ...
+     */
+    @Test
+    public void bind_bindsAllColumnsAtSequentialIndices() {
+        targetInsertStatement = new TargetInsertStatement(propertyHelper, targetSession);
+
+        BoundStatement result = targetInsertStatement.bind(originRow, targetRow, null, null, null, null);
+        assertNotNull(result);
+
+        ArgumentCaptor<Integer> indexCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(boundStatement, times(targetColumnNames.size())).set(indexCaptor.capture(), any(), any(Class.class));
+
+        List<Integer> capturedIndices = indexCaptor.getAllValues();
+        for (int i = 0; i < capturedIndices.size(); i++) {
+            assertEquals(i, capturedIndices.get(i).intValue());
+        }
+    }
+
+    /**
+     * Constant columns are not bound: bind() sets only the non-constant columns, at sequential indices starting from
+     * zero.
+     */
+    @Test
+    public void bind_skipsConstantColumns() {
+        commonSetup(false, true, false);
+        targetInsertStatement = new TargetInsertStatement(propertyHelper, targetSession);
+
+        ArgumentCaptor<Integer> indexCaptor = ArgumentCaptor.forClass(Integer.class);
+
+        targetInsertStatement.bind(originRow, targetRow, null, null, null, null);
+
+        // Constant columns are skipped; only the remaining columns are bound.
+        int expectedBindCount = targetColumnNames.size() - constantColumns.size();
+        verify(boundStatement, times(expectedBindCount)).set(indexCaptor.capture(), any(), any(Class.class));
+
+        List<Integer> capturedIndices = indexCaptor.getAllValues();
+        for (int i = 0; i < capturedIndices.size(); i++) {
+            assertEquals(i, capturedIndices.get(i).intValue());
+        }
+    }
+
+    /**
+     * With an explode-map column present, bind() sets every target column at sequential indices starting from zero.
+     */
+    @Test
+    public void bind_bindsExplodeMapColumnsAtSequentialIndices() {
+        commonSetup(true, false, false);
+        targetInsertStatement = new TargetInsertStatement(propertyHelper, targetSession);
+
+        ArgumentCaptor<Integer> indexCaptor = ArgumentCaptor.forClass(Integer.class);
+
+        targetInsertStatement.bind(originRow, targetRow, null, null, getSampleData(explodeMapKeyType),
+                getSampleData(explodeMapValueType));
+
+        verify(boundStatement, times(targetColumnNames.size())).set(indexCaptor.capture(), any(), any(Class.class));
+        List<Integer> capturedIndices = indexCaptor.getAllValues();
+        for (int i = 0; i < capturedIndices.size(); i++) {
+            assertEquals(i, capturedIndices.get(i).intValue());
+        }
+    }
+
+    /**
+     * With both TTL and writetime enabled, bind() binds each target column at sequential indices and then appends the
+     * TTL value (as an Integer) and the writetime value (as a Long) at the two trailing indices, in that order.
+     */
+    @Test
+    public void bind_appendsTtlAndWritetimeAtTrailingIndicesWithTypes() {
+        when(writetimeTTLFeature.isEnabled()).thenReturn(true);
+        when(writetimeTTLFeature.hasTTLColumns()).thenReturn(true);
+        when(writetimeTTLFeature.hasWritetimeColumns()).thenReturn(true);
+        targetInsertStatement = new TargetInsertStatement(propertyHelper, targetSession);
+
+        ArgumentCaptor<Integer> indexCaptor = ArgumentCaptor.forClass(Integer.class);
+        ArgumentCaptor<Object> valueCaptor = ArgumentCaptor.forClass(Object.class);
+        ArgumentCaptor<Class> classCaptor = ArgumentCaptor.forClass(Class.class);
+
+        Integer ttl = 7200;
+        Long writeTime = 42L;
+
+        BoundStatement result = targetInsertStatement.bind(originRow, targetRow, ttl, writeTime, null, null);
+        assertNotNull(result);
+
+        verify(boundStatement, times(targetColumnNames.size() + 2)).set(indexCaptor.capture(), valueCaptor.capture(),
+                classCaptor.capture());
+
+        List<Integer> allIndices = indexCaptor.getAllValues();
+        List<Object> allValues = valueCaptor.getAllValues();
+        List<Class> allClasses = classCaptor.getAllValues();
+
+        // Columns are bound at sequential indices.
+        for (int i = 0; i < targetColumnNames.size(); i++) {
+            assertEquals(i, allIndices.get(i).intValue());
+        }
+
+        // TTL is bound immediately after the columns, with its value and Integer type.
+        int ttlIdx = targetColumnNames.size();
+        assertEquals(ttlIdx, allIndices.get(ttlIdx).intValue());
+        assertEquals(ttl, allValues.get(ttlIdx));
+        assertEquals(Integer.class, allClasses.get(ttlIdx));
+
+        // WriteTime is bound at the next index, with its value and Long type.
+        int wtIdx = targetColumnNames.size() + 1;
+        assertEquals(wtIdx, allIndices.get(wtIdx).intValue());
+        assertEquals(writeTime, allValues.get(wtIdx));
+        assertEquals(Long.class, allClasses.get(wtIdx));
+    }
+
+    /**
+     * When converting an origin value throws, bind() wraps the failure in a RuntimeException whose message identifies
+     * the value being bound.
+     */
+    @Test
+    public void bind_exceptionWithNonNullOriginValue() {
+        when(targetTable.getCorrespondingIndex(0)).thenReturn(0);
+        when(originTable.getAndConvertData(0, originRow)).thenThrow(new RuntimeException("binding error"));
+
+        RuntimeException ex = assertThrows(RuntimeException.class, () -> targetInsertStatement.bind(originRow,
+                targetRow, 3600, 123456789L, getSampleData(explodeMapKeyType), getSampleData(explodeMapValueType)));
+
+        assertTrue(ex.getMessage().contains("Error trying to bind value"));
+    }
+
 }