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

# Core concepts

> Understand organizations, projects, units, and customers.

| Concept | Meaning |
| - | - |
| Organization | Your workspace with its own team, inventory, and settings. |
| Project | A building or related inventory with shared information and documents. |
| Unit / property | An individual property within a project, such as an apartment. The REST API calls it a `property`. |
| Contact / customer | A person you work with. A contact can participate in several processes. |
| Lead | An active prospect record in the advanced CRM. |
| Opportunity | A qualified commercial record with a pipeline, value, and outcome. |
| Reservation | A buyer's relationship to a unit during reservation and closing. |

## Visibility and status

**Visibility** controls whether a unit is online, offline, or pending review. **Status** describes sales progress, such as available, reserved, or sold. A sold property is not necessarily archived.

## Sharing is a separate decision

Linking a customer to a project in the CRM does not grant access to every apartment. Share the specific units that should appear in their portal. Team and partner sharing have different scopes; check recipients and included objects each time.


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