diff --git a/doc/regions.md b/doc/regions.md
index 7563cd5..c144cd2 100644
--- a/doc/regions.md
+++ b/doc/regions.md
@@ -1 +1,951 @@
 # Regions Module
+Module | HTTP Method | URL | Description 
+--- | --- | --- | ---
+[Add](#add) | POST | /regions | Add Data Region
+[View](#view) | GET | /regions/:id | View Data Region
+[Edit](#edit) | PUT | /regions/:id | Edit Data Region
+[Delete](#delete) | DELETE | /regions/:id | Delete Data Region
+
+## <a name="add"></a>Add Data Region
+
+### Endpoint 
+POST /regions
+
+### Database
+![](./regions.png)
+
+for add, you need get company_id from companies tables
+
+### Headers
+Key | Value 
+--- | ---
+Content-Type | application/json
+Accept | application/json
+
+### Request Payloads
+Name | Type | Example Value
+--- | --- | ---
+region_code | string | AMD  
+name | string | Auto Moro Dewe
+company_id | string | 12
+```
+{
+    "region_code": "AMD",
+    "name": "Auto Moro Dewe"
+    "company_id": "12"
+}
+```
+
+### Response Payloads
+HTTP Code | Status | Description
+--- | --- | ---
+400 | Bad Request | Bad request payload  
+404 | Not Found | User not found in database  
+500 | Internal Server Error | some un-handle error in server 
+200 | OK | OK
+```
+{
+    "status_code": "CDC-400",
+    "status_message": "Bad Request",
+    "data": null
+}
+```
+
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Auto Moro Dewe",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 09:03:44",
+    }
+}
+```
+
+### Logic
+
+#### Validation
+- region_code : required and not empty
+- name: required and not empty
+- company_id: required and not empty
+
+### Scenario Test
+
+#### Case : Negative Case 1
+
+Request Payload : empty
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "region_code is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 2
+
+Request Payload :
+```
+{}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "region_code is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 3
+
+Request payload :
+```
+{
+    "region_code": ""
+}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "region_code is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 4
+
+Request Payload :
+```
+{
+    "region_code": "AMD"
+}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "name is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 5
+
+Request Payload :
+```
+{
+    "region_code": "AMD",
+    "name": ""
+}
+```
+ 
+Response HTTP Status Code : 400
+
+Response Payload:
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "name is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 6
+
+Request Payload
+```
+{
+    "region_code": "AMD",
+    "name": "Auto Moro Dewe"
+}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "company_id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 7
+
+Request Payload :
+```
+{
+    "region_code": "AMD",
+    "name": "Auto Moro Dewe",
+    "company_id": ""
+}
+```
+ 
+Response HTTP Status Code : 400
+
+Response Payload:
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "company_id is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 8
+
+Request Payload
+```
+{
+    "region_code": "AMD",
+    "name": "Auto Moro Dewe",
+    "company_id": "ngasal"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "company_id not found",
+    "data": null
+}
+```
+
+#### Case : Negative Case 9
+
+Request Payload
+```
+{
+    "region_code": "INTL"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "region_code already in use",
+    "data": null
+}
+```
+
+#### Case : Positive Case
+
+Request Payload :
+```
+{
+    "region_code": "AMD",
+    "name": "Auto Moro Dewe"
+    "company_id": "12"
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Auto Moro Dewe",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 09:03:44",
+    }
+}
+```
+
+## <a name="view"></a>View Data Region
+
+### Endpoint
+GET /regions/:id
+
+### Headers
+Key | Value 
+--- | ---
+Content-Type | application/json
+Accept | application/json
+
+### Request Payloads
+Name | Type | Example Value
+--- | --- | ---
+id | string | 7
+```
+{
+    "id": "7",
+}
+```
+
+### Response Payloads
+HTTP Code | Status | Description
+--- | --- | ---
+400 | Bad Request | Bad request payload  
+404 | Not Found | User not found in database  
+500 | Internal Server Error | some un-handle error in server 
+200 | OK | OK
+```
+{
+    "status_code": "CDC-400",
+    "status_message": "Bad Request",
+    "data": null
+}
+```
+
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Auto Moro Dewe",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 09:03:44",
+    }
+}
+```
+
+### Logic
+
+#### Validation
+- id : required and not empty
+
+### Scenario Test
+
+#### Case : Negative Case 1
+
+Request Payload : empty
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 2
+
+Request Payload :
+```
+{}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 3
+
+Request payload :
+```
+{
+    "id": ""
+}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 4
+
+Request Payload
+```
+{
+    "id": "ngasal"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "id not found",
+    "data": null
+}
+```
+
+#### Case : Positive Case
+
+Request Payload :
+```
+{
+    "id": "7",
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Auto Moro Dewe",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 09:03:44",
+    }
+}
+```
+
+## <a name="edit"></a>Edit Data Region
+
+### Endpoint
+PUT /regions/:id
+
+### Headers
+Key | Value 
+--- | ---
+Content-Type | application/json
+Accept | application/json
+
+### Request Payloads
+Name | Type | Example Value
+--- | --- | ---
+id | string | 7
+region_code | string | MMT  
+name | string | Monggo Moro Tumbas
+company_id | string | 12
+```
+{
+    "id": "7",
+    "region_code": "MMT",
+    "name": "Monggo Moro Tumbas"
+    "company_id": "12"
+}
+```
+
+### Response Payloads
+HTTP Code | Status | Description
+--- | --- | ---
+400 | Bad Request | Bad request payload  
+404 | Not Found | User not found in database  
+500 | Internal Server Error | some un-handle error in server 
+200 | OK | OK
+```
+{
+    "status_code": "CDC-400",
+    "status_message": "Bad Request",
+    "data": null
+}
+```
+
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "MMT",
+        "name" : "Monggo Moro Tumbas",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 09:03:44",
+    }
+}
+```
+
+### Logic
+
+#### Validation
+- id : required and not empty
+- region_code : not empty
+- name : not empty
+- company_id : not empty
+
+### Scenario Test
+
+#### Case : Negative Case 1
+
+Request Payload : empty
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 2
+
+Request Payload :
+```
+{}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 3
+
+Request payload :
+```
+{
+    "id": ""
+}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 4
+
+Request Payload
+```
+{
+    "id": "ngasal"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "id not found",
+    "data": null
+}
+```
+
+#### Case : Negative Case 5
+
+Request Payload
+```
+{
+    "id": "7",
+    "region_code": ""
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "region_code is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 6
+
+Request Payload
+```
+{
+    "id": "7",
+    "name": ""
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "name is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 7
+
+Request Payload
+```
+{
+    "id": "7",
+    "company_id": ""
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "company_id is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 8
+
+Request Payload
+```
+{
+    "id": "7",
+    "company_id": "ngarang"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "company_id not found",
+    "data": null
+}
+```
+
+#### Case : Negative Case 9
+
+Request Payload
+```
+{
+    "id": "7",
+    "region_code": "INTL"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "region_code already in use",
+    "data": null
+}
+```
+
+#### Case : Positive Case 1
+
+Request Payload :
+```
+{
+    "id": "7",
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Auto Moro Dewe",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 10:03:44",
+    }
+}
+```
+
+#### Case : Positive Case 2
+
+Request Payload :
+```
+{
+    "id": "7",
+    "region_code": "MMT",
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "MMT",
+        "name" : "Auto Moro Dewe",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 10:03:44",
+    }
+}
+```
+
+#### Case : Positive Case 3
+
+Request Payload :
+```
+{
+    "id": "7",
+    "name": "Monggo Moro Tumbas",
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Monggo Moro Tumbas",
+        "company_code" : "BKNINTEL",
+        "company_id" : "12",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 10:03:44",
+    }
+}
+```
+
+#### Case : Positive Case 4
+
+Request Payload :
+```
+{
+    "id": "7",
+    "company_id": "15",
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": {
+        "id":"7",
+        "region_code" : "AMD",
+        "name" : "Monggo Moro Tumbas",
+        "company_code" : "RIJEN",
+        "company_id" : "15",
+        "created" : "2020-12-02 09:03:44",
+        "modified" : "2020-12-02 10:03:44",
+    }
+}
+```
+
+## <a name="delete"></a>Delete Data Region
+
+### Endpoint
+DELETE /regions/:id
+
+### Headers
+Key | Value 
+--- | ---
+Content-Type | application/json
+Accept | application/json
+
+### Request Payloads
+Name | Type | Example Value
+--- | --- | ---
+id | string | 7
+```
+{
+    "id": "7",
+}
+```
+
+### Response Payloads
+HTTP Code | Status | Description
+--- | --- | ---
+400 | Bad Request | Bad request payload  
+404 | Not Found | User not found in database  
+500 | Internal Server Error | some un-handle error in server 
+200 | OK | OK
+```
+{
+    "status_code": "CDC-400",
+    "status_message": "Bad Request",
+    "data": null
+}
+```
+
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": null
+}
+```
+
+### Logic
+
+#### Validation
+- id : required and not empty
+
+### Scenario Test
+
+#### Case : Negative Case 1
+
+Request Payload : empty
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 2
+
+Request Payload :
+```
+{}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is required",
+    "data": null
+}
+```
+
+#### Case : Negative Case 3
+
+Request payload :
+```
+{
+    "id": ""
+}
+```
+
+Response HTTP Status Code : 400
+
+Response Payload :
+```
+{
+    "status_code": "cdc-400",
+    "status_message": "id is empty",
+    "data": null
+}
+```
+
+#### Case : Negative Case 4
+
+Request Payload
+```
+{
+    "id": "ngasal"
+}
+```
+
+Response HTTP Status Code : 404
+
+Response Payload
+```
+{
+    "status_code": "cdc-404",
+    "status_message": "id not found",
+    "data": null
+}
+```
+
+#### Case : Positive Case
+
+Request Payload :
+```
+{
+    "id": "7",
+}
+```
+
+Response HTTP Status Code : 200
+
+Response Payload :
+```
+{
+    "status_code": "CDC-200",
+    "status_message": "OK",
+    "data": null
+}
+```
\ No newline at end of file
diff --git a/doc/regions.png b/doc/regions.png
new file mode 100644
index 0000000..9c84489
Binary files /dev/null and b/doc/regions.png differ