Electronic Invoicing – El Salvador

Implementing electronic invoicing in El Salvador introduces a key difference compared to other countries in the region: instead of working directly with XML, the exposed services rely on modern JSON-based APIs.

While this simplifies part of the integration, it also brings new challenges. The JSON structures are large, with many fields and sometimes non-intuitive naming, making them harder to work with directly and increasing the risk of implementation errors.

This package, built in PHP, was created to simplify that process. Instead of manually constructing the required JSON payload, the developer defines the data using a cleaner and more manageable structure. The package then maps that data into the expected format and handles the communication with the API.

The goal is to keep the integration simple, even when dealing with complex structures, allowing developers to focus on business logic rather than API contract details.

This project complements a broader set of solutions focused on electronic invoicing across Latin America, adapting to the technical specifics of each country.