\documentclass{article}

\usepackage{tabularx} 
%\usepackage{colortbl}

\usepackage[acronym, nomain]{glossaries} 
\makeglossaries

\newacronym{err}{Error}{Error Test}
\newacronym{erl}{longError}{Long Error Test}

\begin{document}

\printglossary[type=\acronymtype, style=super]

\section{Section}
\gls{err}
\gls{erl}
	
\end{document}