I have the same problem trying to build a model. When I run step by step in the model, it runs well. When I create parameter and run the model from ArcToolbox, it gave me the error: ERROR 000840 The value is not a Raster Layer. ERROR 000840: The value is not a Mosaic Layer. I have checked all the setting, and there is anything that indicates the Feature Class has to be Raster. Attached are the error message and parameter properties of my model. Please help! Thank you! Serena
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