# Data Models

This section contains the documentation of the different data models returned by the APIs, detailing the fields and their descriptions. Includes:

* **Economic Activities**: Description of economic activity codes (CNAE).
* **Cities**: Information about cities, including IBGE codes.
* **Establishments**: Data about commercial establishments, such as addresses and registration statuses.
* **States**: Details of Brazilian states, with IBGE codes.
* **State Registrations**: Information about state registrations associated with CNPJs.
* **Suframa**: Documentation about Suframa registrations.
* **Error Messages**: List of possible error messages returned by the APIs.
* **Legal Natures**: Details about the legal natures of companies.
* **Countries**: Information about countries, with BACEN codes.
* **Company Sizes**: Descriptions of company sizes (ME, EPP, etc.).
* **Corporate Qualifications**: Details about partner qualifications.
* **Tax Regimes**: Information about company tax regimes.
* **Simples Nacional and MEI**: Data related to Simples Nacional and MEI.
* **Registration Statuses**: Details about the registration statuses of companies with the Federal Revenue.
* **Partners**: Information about company partners.

These documents are essential to understand the types of data that can be queried and received by the APIs.