Why do I have duplicate values in my model?

This generally means that a model was uploaded multiple times. The Code Reference values are created each time the model is uploaded, leading to multiple copies of the same variables and equations. These multiple copies will create confusion and break your model.  To avoid this, whenever a model is uploaded, export the Excel variable workbook, then copy and match the listed code references to the Code Reference column in your upload workbook. This locks each variable to a code reference and does not create duplicates on the next upload.