Thanks. If its a array ref: when I tried ... 

$joined_FS{$_} ||= {( %{$VAR1->{$_}||{}}, @{$VAR2->{@_}||{}} )} for ke
+ys(%$VAR1), keys(@$VAR2);

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I get same error ... Is it possible to join array ref and hash ref please?

In reply to Re^2: Error: when joining two hashes by Sami_R
in thread Error: when joining two hashes by Sami_R

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