G-Cubed Model configuration validation
G-Cubed loads one UTF-8 YAML mapping, validates it against the packaged schema, and then checks it against the selected model and filesystem.
Common errors include:
- an unquoted build number;
- duplicate or unknown keys;
- explicit
nullwhere a value must be omitted instead; - anchors, aliases, merge keys or custom tags;
- quoted numbers or booleans;
- unsafe filenames containing directories;
- years in the wrong order;
- a feature without its required mapping;
- a region code not present in the model; and
- a partial baseline-tuning regional override.
Read the error path
An error path such as baseline_tuning.real_interest_rates_in_base_year.region_overrides.LKA identifies the part of the YAML to correct. Fix the first reported structural error before interpreting later model-aware errors.
Start from a working build
For a complete maintained example, inspect models/6W/199/model_configuration.yaml. Copy only into another model after checking its version, regions, sectors, mappings and features.