> ## Documentation Index
> Fetch the complete documentation index at: https://learn.nexudus.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create CourseSection

> Create a new CourseSection record.

A **CourseSection** is a structural grouping that organises lessons within a `Course`. Sections represent milestones or learning stages — each section should bring the member one step closer to the course's overall learning goal.

Sections are ordered by `DisplayOrder` and can be set to unlock immediately or after a delay, using the same `UnlockType` / `UnlockAfterDays` mechanism as individual lessons:

| UnlockType | Meaning                                                          |
| ---------- | ---------------------------------------------------------------- |
| Immediate  | Section is available as soon as the member enrols                |
| Sequential | Unlocked only after the previous section is completed            |
| Timed      | Unlocked after the number of days specified by `UnlockAfterDays` |

Sections are optional — lessons can belong directly to a course without a section. However, using sections can help create a clearer learning path for members, and allows you to unlock groups of lessons at once.

## Authentication

<Note>
  This endpoint requires OAuth2 authentication. Include a valid bearer token in the `Authorization` header.
  The authenticated user must be a full unrestricted administrator or have the **`CourseSection-Create`** role.
</Note>

## Request Body

### Required Fields

<ParamField body="CourseId" type="integer" required>
  ID of the course this section belongs to.
</ParamField>

<ParamField body="Title" type="string" required>
  Section title displayed to members.
</ParamField>

<ParamField body="DisplayOrder" type="integer" required>
  Position of the section within the course; lower numbers appear first.
</ParamField>

<ParamField body="UnlockType" type="integer" required>
  When the section becomes available: Immediate (1), after the previous section is done — Sequential (2), or after a set number of days — Timed (3).
</ParamField>

<ParamField body="UnlockAfterDays" type="integer" required>
  Number of days after enrolment before the section unlocks; only used when UnlockType is Timed (3).
</ParamField>

### Optional Fields

<ParamField body="SectionContents" type="string">
  Optional HTML or rich-text introductory content shown at the top of the section.
</ParamField>

<ParamField body="Active" type="boolean">
  Whether the section is active and visible to enrolled members.
</ParamField>

<ParamField body="NewImageUrl" type="string">
  URL of a new thumbnail image to upload (JPG/JPEG, PNG, or GIF, max 10 MB).
</ParamField>

<ParamField body="ClearImageFile" type="boolean">
  Set to true to remove the existing thumbnail image.
</ParamField>

## Code Examples

<CodeGroup>
  ```bash cURL theme={null}
  curl -X POST \
    "https://spaces.nexudus.com/api/content/coursesections" \
    -H "Authorization: Bearer YOUR_TOKEN" \
    -H "Content-Type: application/json" \
    -d '{
      "CourseId": 0,
      "Title": "",
      "DisplayOrder": 0,
      "UnlockType": 0,
      "UnlockAfterDays": 0
  }'
  ```

  ```javascript JavaScript theme={null}
  const response = await fetch(
    'https://spaces.nexudus.com/api/content/coursesections',
    {
      method: 'POST',
      headers: {
        'Authorization': 'Bearer YOUR_TOKEN',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        CourseId: 0,
        Title: '',
        DisplayOrder: 0,
        UnlockType: 0,
        UnlockAfterDays: 0
      })
    }
  );

  const data = await response.json();
  ```

  ```python Python theme={null}
  import requests

  response = requests.post(
      'https://spaces.nexudus.com/api/content/coursesections',
      headers={
          'Authorization': 'Bearer YOUR_TOKEN',
          'Content-Type': 'application/json'
      },
      json={
          'CourseId': 0,
          'Title': '',
          'DisplayOrder': 0,
          'UnlockType': 0,
          'UnlockAfterDays': 0
      }
  )

  data = response.json()
  ```
</CodeGroup>

## Response

### 200

<ResponseField name="Status" type="integer">
  HTTP status code. `200` on success.
</ResponseField>

<ResponseField name="Message" type="string">
  A human-readable message confirming the creation.
</ResponseField>

<ResponseField name="Value" type="object">
  Contains the `Id` of the newly created record.
</ResponseField>

<ResponseField name="WasSuccessful" type="boolean">
  `true` if the coursesection was created successfully.
</ResponseField>

<ResponseField name="Errors" type="array">
  `null` on success.
</ResponseField>

```json Example Response theme={null}
{
  "Status": 200,
  "Message": "CourseSection was successfully created.",
  "Value": {
    "Id": 87654321
  },
  "OpenInDialog": false,
  "OpenInWindow": false,
  "RedirectURL": null,
  "JavaScript": null,
  "UpdatedOn": "2025-01-15T10:30:00Z",
  "UpdatedBy": "admin@example.com",
  "Errors": null,
  "WasSuccessful": true
}
```

### 400

<ResponseField name="Message" type="string">
  A summary of the validation error(s), in the format `PropertyName: error message`.
</ResponseField>

<ResponseField name="Value" type="any">
  `null` on validation failure.
</ResponseField>

<ResponseField name="Errors" type="object[]">
  Array of validation errors.

  <Expandable>
    <ResponseField name="AttemptedValue" type="any">
      The value that was submitted for the field, or `null` if missing.
    </ResponseField>

    <ResponseField name="Message" type="string">
      The validation error message.
    </ResponseField>

    <ResponseField name="PropertyName" type="string">
      The name of the property that failed validation.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="WasSuccessful" type="boolean">
  `false` when the request fails validation.
</ResponseField>

```json Example Response theme={null}
{
  "Message": "Title: is a required field",
  "Value": null,
  "Errors": [
    {
      "AttemptedValue": null,
      "Message": "is a required field",
      "PropertyName": "Title"
    }
  ],
  "WasSuccessful": false
}
```