Assistance Required with Subarea Definition Glitch in QAPEX Step 2

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Anmol Singh

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May 21, 2026, 6:34:33 AM (4 days ago) May 21
to EPIC / APEX Modeling Forum

Dear APEX Team,

I am experiencing a glitch in the second step of QAPEX while attempting to define subareas. Specifically, I am selecting Dominant Land Use, Dominant Soil, Dominant Slope (Option 1 in the screenshot attached), but the model is automatically assigning the subareas according to Dominant Land Use/Dominant Soil/Dominant Slope (Option 2 in the screenshot).

I have also tried using the User Defined option (Option 3 in the screenshot), but the subareas are still being assigned as per Option 2.

Could you please assist me in resolving this issue?

Thank you for your support.

Best regards, Anmol Singh 

Graduate Research Assistant 

Department of Biological & Agricultural Engineering
Texas A&M University | College Station, TX 77843
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