I have a model which is set up to first iterate (using Feature Selection) through all points in a feature class using a unique value from field X (string).
The model then takes this feature and runs it through the Get Field Value tool in order to identify the attribute for any given feature from field Y (string).
This point is then fed into the Batch Watershed Delineation tool from the ArcHydro Toolset. Each of the input files for this tool are located in the same raster folder. Input files all begin with the same text. E.g. for Input Flow Direction Grid I have several files in my folder that start with "fdr" and end with the attributes gathered from the Get Field Value.
I created a string variable which points to the folder containing the raster files. I named this variablerasterLocation. I have tried to reference each of the relevant input files in the Batch Watershed Delineation Tool, e.g. %rasterLocation%fdr%Y%
However, I get the error message - "Input dataset does not exist or is not supported."