diff --git a/autorag/VERSION b/autorag/VERSION
index c44fec2a0..0b9c01996 100644
--- a/autorag/VERSION
+++ b/autorag/VERSION
@@ -1 +1 @@
-0.3.11rc3
+0.3.12
diff --git a/autorag/data/parse/run.py b/autorag/data/parse/run.py
index a289e35ba..502f052d7 100644
--- a/autorag/data/parse/run.py
+++ b/autorag/data/parse/run.py
@@ -95,11 +95,11 @@ def run_parser(
 
 	# save results to parquet files
 	if all_files:
-		filepaths = list(
-			map(
-				lambda x: os.path.join(project_dir, f"{x}.parquet"), range(len(modules))
+		if len(module_params) > 1:
+			raise ValueError(
+				"All files is set to True, You can only use one parsing module."
 			)
-		)
+		filepaths = [os.path.join(project_dir, "parsed_result.parquet")]
 	else:
 		filepaths = list(
 			map(
diff --git a/docs/source/data_creation/parse/parse.md b/docs/source/data_creation/parse/parse.md
index 2de27dad5..255cf2324 100644
--- a/docs/source/data_creation/parse/parse.md
+++ b/docs/source/data_creation/parse/parse.md
@@ -154,8 +154,11 @@ If the parsing is completed successfully, the following three types of files are
 
 #### Use all files
 
-For example, if parsing is performed using three parse methods, the following files are created.
-`0.parquet`, `1.parquet`, `2.parquet`, `parse_config.yaml`, `summary.csv`
+You can use only one parse method at a time.
+
+Parsed result will be saved as `parsed_result.parquet`.
+
+If you want to use two all_files parse method, you should run the parse pipeline twice with different two YAML files.
 
 Finally, in the summary.csv file, you can see information about the parsed result, such as what parse method was used to parse it.
 
diff --git a/sample_config/parse/all_files_full.yaml b/sample_config/parse/all_files_full.yaml
index 441a4ce44..9cdbf7e92 100644
--- a/sample_config/parse/all_files_full.yaml
+++ b/sample_config/parse/all_files_full.yaml
@@ -1,10 +1,22 @@
+# You can use only one of the following modules at a time.
 modules:
+  # Use Directory Parse
   - module_type: langchain_parse
     file_type: all_files
-    parse_method: [ directory, unstructured, upstagedocumentparse ]
+    parse_method: directory
+  # Use Unstructured
+  - module_type: langchain_parse
+    file_type: all_files
+    parse_method: unstructured
+  # Use Upsatge Document Parse
+  - module_type: langchain_parse
+    file_type: all_files
+    parse_method: upstagedocumentparse
+  # Use Naver Clova OCR
   - module_type: clova
     file_type: all_files
     table_detection: true
+  # Use Llama Parse
   - module_type: llamaparse
     file_type: all_files
     result_type: markdown
diff --git a/tests/autorag/test_parser.py b/tests/autorag/test_parser.py
index 5c2edf82b..552124cdb 100644
--- a/tests/autorag/test_parser.py
+++ b/tests/autorag/test_parser.py
@@ -157,8 +157,10 @@ def test_start_parsing_all_files(simple_parser):
 	project_dir = simple_parser.project_dir
 	assert os.path.exists(project_dir)
 	assert os.path.exists(os.path.join(project_dir, "parse_config.yaml"))
-	assert os.path.exists(os.path.join(project_dir, "0.parquet"))
-	all_files_result = pd.read_parquet(os.path.join(project_dir, "0.parquet"))
+	assert os.path.exists(os.path.join(project_dir, "parsed_result.parquet"))
+	all_files_result = pd.read_parquet(
+		os.path.join(project_dir, "parsed_result.parquet")
+	)
 
 	expect_result_columns = ["texts", "path", "page", "last_modified_datetime"]
 	assert all(