Error in SWAT+ due to decision table

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Matthew Lombardo

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Feb 9, 2026, 2:49:10 PMFeb 9
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Hi all,

I've attached a screenshot of the error message. I am using three management schudules to flood three different HRU's by specific depths, which I calculated based on the runoff of a certain part of the watershed. The three different HRUs are 662, 663, and 672. I think that the error is with the management schedule for HRU 672. Can someone help me fix my error?

Management schedule creation workflow:
1.) Created irrigation operations for each HRU with the depths I calculated. 
2.) Created a management schedule for each HRU using the irrigation operations for one day.
3.) Created unique land uses for each HRU, where I exactly copied the old land uses and filled in the management schedule field with each unique schedule.
4.) Assigned the land use managements to each HRU.

Thank you for you time and help,
Matt Lombardo
HRU672 Landuse.png
HRU672 Man Schedule.png
HRU662 Man Schedule.png
HRU Data.png
SWAT+ Error.png
HRU662 Landuse.png
HRU663 Landuse.png
Irrigation Operations.png
HRU663 Man Schedule.png

Matthew Lombardo

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Feb 12, 2026, 10:28:39 PMFeb 12
to QSWAT+
Hi all, 

I wanted to expand on my issue. I tested my model with just the management scheduels for HRUS 662 and 663 and it ran completely. The irrigation operation and management schudule should be identical to the other two besides the irrigation amount. What is causing this issue.

Thank you,
Matt Lombardo

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