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

# ExtAppHeadingLink table

> Heading link table for ExtApp, for MDO headers

## ExtAppHeadingLink Table (135)

Heading link table for ExtApp, for MDO headers

## Fields

| Name                      | Description                           | Type                            | Nullable |
| ------------------------- | ------------------------------------- | ------------------------------- | :------: |
| extappheadinglink\_id     | Primary key                           | PK                              |    No    |
| extapp\_id                | Link to ExtApp list table             | FK [ExtApp](./extapp.mdx)       |    No    |
| heading\_id               | Link to Heading table                 | FK [Heading](./heading.mdx)     |    No    |
| registered                | Registered when                       | UtcDateTime                     |    No    |
| registered\_associate\_id | Registered by whom                    | FK [associate](./associate.mdx) |    No    |
| updated                   | Last updated when                     | UtcDateTime                     |    No    |
| updated\_associate\_id    | Last updated by whom                  | FK [associate](./associate.mdx) |    No    |
| updatedCount              | Number of updates made to this record | UShort                          |    No    |

<img src="https://mintcdn.com/superofficeas/zNQa3AO19PFK63SB/media/loc/en/database/tables/ExtAppHeadingLink.png?fit=max&auto=format&n=zNQa3AO19PFK63SB&q=85&s=abc412d5928961206916e1dd9d8f4a65" alt="ExtAppHeadingLink table relationship diagram" width="667" height="664" data-path="media/loc/en/database/tables/ExtAppHeadingLink.png" />

## Indexes

| Fields      | Types | Description |
| ----------- | ----- | ----------- |
| extapp\_id  | FK    | Index       |
| heading\_id | FK    | Index       |

## Relationships

| Table                    | Description                                                           |
| ------------------------ | --------------------------------------------------------------------- |
| [associate](./associate) | Employees, resources and other users - except for External persons    |
| [ExtApp](./extapp)       | ExtApp list table. Applications startable from SuperOffice            |
| [Heading](./heading)     | Heading items for all MDO lists, lists that are grouped and filtered. |

## Replication Flags

* Replicate changes DOWN from central to satellites and travellers.
* Replicate changes UP from satellites and travellers back to central.
* Copy to satellite and travel prototypes.

## Security Flags

* No access control via user's Role.


## Related topics

- [ExtAppGroupLink table](/en/database/tables/extappgrouplink.md)
- [ExtApp table](/en/database/tables/extapp.md)
- [Heading table](/en/database/tables/heading.md)
- [QuoteApprReasonHeadingLink table](/en/database/tables/quoteapprreasonheadinglink.md)
- [associate table](/en/database/tables/associate.md)
- [Database table listing](/en/database/tables/index.md)