Data file issues for Dakota surrogate modelling and model parameter optimization

[JohninSJ]

Hello, there, I am using Dakota to do surrogate modelling and then model parameter optimization. There is no issues for surrogate modelling alone. However when using the same data files for surrogate modelling and then model parameter optimization, it keeps saying "Error (Surrogate model with id 'SurrModel' import_build_points): wrong number of columns on line 2 of file 'TrainData_raw.dat'; expected 23, found 22.". This data file contains 10 input and 10 output variables. I tested the same script but using data file with 5 input and 1 output variables, the Dakota run completed successfully. I used the same data file format, therefore can not find what really cause the issues. Your help will be much appreciated. John