Developed and delivered current sensor data validation enhancements for the PowerGridModel/power-grid-model repository, focusing on improving the integrity of sensor measurements in grid simulations. The work extended backend validation logic to support both symmetrical and asymmetrical current sensors, introducing checks for required fields and valid terminal types. Using Python and unit testing, the implementation aimed to reduce invalid data propagation and strengthen the robustness of the model’s data layer. This feature established a foundation for broader sensor validation and future enhancements, ensuring that the repository is better equipped to handle diverse sensor configurations and maintain reliable simulation results.