For one thing, you list has the wrong number of commas. This will mess up the alignment and what items are named and which are values.

    'K.Page.B'            =>  "do214",,
    'X3.DT'           =>  ,
    'X3.TM'           =>  ,
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The empty value is also not good because Perl empty list elements completely. Use the empty string if you an empty value.