diff --git a/README.md b/README.md
index 461bf52..ea4ea57 100644
--- a/README.md
+++ b/README.md
@@ -53,9 +53,19 @@ gradle run
 ### Run tests
 
 ```sh
-gradle test
+gradle test # only run tests
+gradle testCodeCoverageReport # run tests & generate coverage
 ```
 
+See test results
+```sh
+app/build/reports/tests/test/index.html # general
+app/build/reports/jacoco/testCodeCoverageReport/html/index.html # coverage
+```
+
+
+
+
 ### Format
 
 You need to have `clang-format` installed.
diff --git a/docs/spec.openapi.yml b/docs/spec.openapi.yml
index 79e2776..15cff8e 100644
--- a/docs/spec.openapi.yml
+++ b/docs/spec.openapi.yml
@@ -165,12 +165,29 @@ paths:
             schema:
               $ref: '#/components/schemas/ReqFileUpload'
       responses:
-        "200":
+        "201":
           description: File is being uploaded. You can check it's state later with the `/file_check` request.
           content:
             Object:
               schema:
                 $ref: '#/components/schemas/ResFileNew'
+        "400":
+          description: Failed field validation.
+          content:
+            Object:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/ResStatus'
+                  - type: object
+                    properties:
+                      msg:
+                        example: '"fileContent: must not be null","fileName: must not be null"'
+        "413":
+          description: Bad request. File is too large.
+          content:
+            Object:
+              schema:
+                $ref: '#/components/schemas/ResStatus'
         'default':
           description: An error occurred. Returns error code and message. See possible responses at [Metadata API Spec endpoint `POST /files`](https://github.com/hawks-atlanta/metadata-scala/blob/main/docs/spec.openapi.yaml)
           content: