First, check the failed file for the error message(s). Anything within the parenthesis is the reason the file is failing. To see why something is failing I refer to the File Layout Help and check the Detailed View to see what Columns require what items. All Items in Bold on the File Layout Help are required fields. Sometimes the required fields require very specific information. To see what this information is, navigate to:
  1. Core > Settings > Data
  2. Data Import
  3. Find the Name of the Data Import you are working with
  4. Click File Layout Help 
  5. Click Detailed View next to the Scheme you are using to Import the file
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  1. This provides specific information that these fields require (for example must match exactly in WH)
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