</span> <span class='op'>&lt;-</span> <span class='cn'>NULL</span>
<span class='fu'>check_dd_ae_aedthdtc_ds_dsstdtc</span><span class='op'>(</span><span class='va'>AE</span>, <span class='va'>DS</span><span class='op'>)</span>
</div><div class='output co'>#&gt; [1] FALSE
#&gt; attr(,"msg")
#&gt; [1] "DS is missing the variables: DSDECOD, DSSTDTC"</div><div class='input'>
</div></pre>
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