Why this error occurs
This error means no emission factor exists for your specific combination of labels.
Example: You've selected a waste type and treatment method that don't have a matching emission factor in our database.
How to resolve label combination errors
Option 1: Try alternative combinations
Select a different waste treatment type
Choose a broader category if available
Test different label combinations until you find a match
Option 2: Use "Unknown" labels, if available
Select Unknown for the problematic label, if it is available
Our team will assign a general emission factor for that category
Less specific but allows you to proceed with data entry
Note that choosing "Unknown" label will slow down publishing of your data