New to HDL

Summary

Trying to load data using HDL

Content

Hello All.  I am fairly new to HDL and trying to figure out how to put together the import file when loading data.  I am using the Job object, which I downloaded from the application.  By the way, I am currently on 19A and upgrading to 19B soon, and want to make sure I understand how to use HDL since the spreadsheet loaders will not be available anymore (at least that is my understanding).  

I have attached the .dat file that I tried to upload.  Can you tell me what I am doing wrong?  I have also included the errors I get when I try to import the file.  Any direction, documentation, or instructions given are welcomed and appreciated.