For some compatibility matter, I am still using SNAP 6.0 to exploit the snappy module in python.
I need to work only on a subset of a GRD IW product so I implement a subsetting operation before the preprocessing steps. Everything seems to work fine even after the Apply Orbit operation. But the ThermalNoiselRemoval step gives my a Java Null Point Exception Error. If I tried the same steps over the whole GRD product and I extract the subset at the end of all the preprocessing steps , the processing is all successfull. Which is the reason?? from the desktop SNAP I can preprocess directly the subset, without going into it with the whole heavy product.
Thanks for your help (maybe @marpet @ABraun @mengdahl @lveci have ideas 
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