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Hello STKO team,
How many lines can record in OPENSEES recorder command at most? When I add about 300 lines, a warning will appear, it is not warning about the number of lines, but warning about not opening my ground file, Please tell me how to solve this problem.
thanks and regards!

Without your model, I cannot make sure what is the source of your error.
Could you share your model?

From your description, it seems that you have a problem with the default limit of open files for I/O which in Windows is 512.
In OpenSees you have a command to increase that number.
Try this in tcl before creating the recorders: