diff --git a/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/local_declaration_access_n.ets b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/local_declaration_access_n.ets
new file mode 100644
index 0000000000000000000000000000000000000000..bd9213cfb82ba972dab17956029b502cc2fce44c
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/local_declaration_access_n.ets
@@ -0,0 +1,36 @@
+/*---
+Copyright (c) 2021-2025 Huawei Device Co., Ltd.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+---*/
+
+{% for c in cases %}
+/*---
+desc: Local declaration - use a name declared in another block.
+tags: [compile-only, negative]
+---*/
+
+function add5(b: int): int {
+  {{c.decl}} a: int = 5;
+  let i: int = a + b;
+  return i;
+}
+
+function main(): void {
+  let j: int = 0;
+  { 
+    {{c.decl}} k = 7;
+    j = add5(k);
+  }
+  let y = {{c.name}};
+}
+{% endfor %}
diff --git a/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/local_declaration_access_n.params.yaml b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/local_declaration_access_n.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..a60cdb66000fba716e90f1c27bb96edc0959ee5a
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/local_declaration_access_n.params.yaml
@@ -0,0 +1,19 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+cases:
+    - { decl: 'let',   name: a }
+    - { decl: 'const', name: a }
+    - { decl: 'let',   name: k }
+    - { decl: 'const', name: k }
diff --git a/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_func_n.ets b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_func_n.ets
new file mode 100644
index 0000000000000000000000000000000000000000..732a71e0dbf384b78ca7437d718c43f90c0ac9a2
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_func_n.ets
@@ -0,0 +1,31 @@
+/*---
+Copyright (c) 2021-2025 Huawei Device Co., Ltd.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+---*/
+
+{% for c in cases %}
+/*---
+desc: Local declaration - use a name before declaration.
+tags: [compile-only, negative]
+---*/
+
+function add5(b: int): int {
+  let i: int = a + b;
+  {{c.decl}} a: int = 5;
+  return i;
+}
+
+function main(): void {
+  let y: int = add5(7);
+}
+{% endfor %}
diff --git a/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_func_n.params.yaml b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_func_n.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..bcb32ca5502bf120d2c8fabddd01e67c40940508
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_func_n.params.yaml
@@ -0,0 +1,17 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+cases:
+    - decl: 'let'
+    - decl: 'const'
diff --git a/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_n.ets b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_n.ets
new file mode 100644
index 0000000000000000000000000000000000000000..a159657db9fc0874bd5eac0fd03d72e512d78ee2
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_n.ets
@@ -0,0 +1,26 @@
+/*---
+Copyright (c) 2021-2025 Huawei Device Co., Ltd.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+---*/
+
+{% for c in cases %}
+/*---
+desc: Local declaration - use name before declaration.
+tags: [compile-only, negative]
+---*/
+
+function main(): void {
+  let b: int = a + 7;
+  {{c.decl}} a: int = 5;
+}
+{% endfor %}
diff --git a/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_n.params.yaml b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_n.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..bcb32ca5502bf120d2c8fabddd01e67c40940508
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/08.statements/04.local_declarations/post_declaration_n.params.yaml
@@ -0,0 +1,17 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+cases:
+    - decl: 'let'
+    - decl: 'const'
diff --git a/static_core/plugins/ets/tests/test-lists/ets-cts/ets-cts-ignored.txt b/static_core/plugins/ets/tests/test-lists/ets-cts/ets-cts-ignored.txt
index 1784c3645033ab27652092856014d787391fb2fd..4fa8e64d58c7d58de331f966ab8b8e9ad2116226 100644
--- a/static_core/plugins/ets/tests/test-lists/ets-cts/ets-cts-ignored.txt
+++ b/static_core/plugins/ets/tests/test-lists/ets-cts/ets-cts-ignored.txt
@@ -1246,6 +1246,10 @@
 #23051 Reference comparison
 07.expressions/25.equality_expressions/reference_equality/type_conversion_of_one_operand_to_another_type.ets
 
+#29971
+08.statements/04.local_declarations/post_declaration_func_n_1.ets
+08.statements/04.local_declarations/post_declaration_n_1.ets
+
 #25042 Ast verifier failure for for-of with labelled statement
 08.statements/11.continue_statements/continue_for_of3l.ets
 08.statements/11.continue_statements/continue_for_of5l.ets