Guideline to be followed while uploading Candidate details Through Bulk upload :

•     Date format has to be “mm-dd-yyyy”
      Post converting Date to above format checked once by selecting entire column 
     Right click on Date column -> Format cell -> Number -> OK

           If column details converted to Number that means your column is in right format

             Refer below image for formatting :

•       Remove Special Characters from File ,also do not keep any random data in Sheet2
        Only validation excel data valid in Sheet2(Pointers - before filling data)
        as shown in below image.
•       Once you done with formatting remove Sheet 2 before uploading the file
  
  

•  Fill all Mandatory fields in Sheet1(Candidate Details)

•  While Saving file do not keep any Special Character in File Name and keep file format same