Welcome to the developer guide for creating checks for data validator. 1. All the checks have to be added inside the data_validator/checks directory. 2. All the checks must start with the name of check_. 3. All the checks must accept an object of type DataLoader as input and return an object of type DataStatus as output. 4. Though it is not mandatory for the scripts to start with 'check_'. However it is a good practice for readability. The current version follows the same. 5. Multiple check scripts can also be grouped together into subdirectories inside the checks directory.