Error importing mgt_out.txt

[Gizel]

Dear All,
I am currently experiencing the following issue. Could someone kindly advise me on how to resolve it?

Error importing mgt_out.txt: Error in file 'C:/Users/Scenarios/Default/TxtInOut\mgt_out.txt', line 7003, char ?: NOT NULL constraint failed: mgt_out.soil_solp
--> 340        2016           8           4 agrl                                        HARV/KILL  8.2945704E-02  0.0000000E+00  3.0000001E-06   735.3546       373.4447      0.2024958       44.68649  

Thank you , 

Gizel