What does “Warning: One or more years not covered” mean?

This Warning is designed to be an aid to model mapping and not used as a non-coverage report. (The actual non-coverage report excludes things that are not valid.)

These warnings are to make sure your Model Mappings are complete. There are times when the VCdb has changed model names, especially at the break points in research like 1975, 1995, etc. It’s often the case that you need to add additional ACES models to a map.

Another case is when the source file uses “model groups” and you missed a model in the group (that might also be shown by missing years).