Calibration Error in SWAT CUP

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tanvir ahamed

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Jan 27, 2026, 9:02:29 PM (7 days ago) Jan 27
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Dear SWAT-CUP Community,

I have been encountering the following error for the past couple of weeks while calibrating my SWAT-CUP model using streamflow data. Some details of the model are

Number of years simulated: 6
Beginning year of simulation: 2015
number of years to skip output printing/summarization: 2
beginning year of simulation (NOT INCLUDING WARM UP PERIOD): 2017
end year of simulation: 2020

Error Message:

C:\SWAT\Crypto.Spe.SwatCup>SPE_Single_Obj_goal_fn.exe
!ERROR simulation number 2 in variable file 1 is missing or has a problem

C:\SWAT\Crypto.Spe.SwatCup>SPE_Single_Obj_new_pars.exe
simulation no  3  is missing from the single_obj_goal.txt file

C:\SWAT\Crypto.Spe.SwatCup>SPE_Single_Obj_95ppu.exe
Error! simulation 1 has problems


I also attached all the SWAT-CUP tabs for your review. Could anyone please let me know how I can resolve this issue?

Thank you

Tanvir
SPE_swEdit.png
Observed_reach.png
Extract_no_obs_rch.png
File_Cio1.png
Observed_txt.png
Var_file_name.png
Var_file_rch.png
Par_inf.png
SPE_extract_rch.png
File_Cio.png
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