I created a master model with many submodels in it. I'm having problems with the last submodel "Table Join Shapefile". In this submodel there are three input parameters: "TDM_Join_INRIX_Merge","TDM_Network_Projection","INRIX_Network_Projection".The input of these parameters have already been existed in the master model. "TDM_Join_INRIX_Merge" is the output of submodel "TDM Data Preparation". "INRIX_Network_Projection" is the output of submodel "INRIX Data Preparation".
So I just need to connect the existing output to the parameters of submodel "Table Join Shapefile". However, after adding the submodel "Table Join Shapefile" into the master model, it only shows two input parameters instead of three. I have to make an independent variable from parameter of "TDM_Network_Projection" instead of connecting the existing "TDM_Network_Projection" (output of submodel "TDM Data Preparation") to it. I couldn't figure out why.