I want to put part name in center of TOC as MODULE - I with out page number.
\documentclass{scrbook}
\usepackage[english]{babel}
\usepackage{lipsum}
\usepackage{tocstyle}
\renewcommand{\partname}{Module}%
\usetocstyle{standard}
%\settocfeature{pagenumberhook}{}
\renewcommand*{\addparttocentry}[2]{%
\addtocentrydefault{part}{}{\protect\parbox{\textwidth}{\protect\centering#2}}% original #1 in second argument
}
\begin{document}
\tableofcontents
\part{A}
\chapter{chapter A}
\section{Section a}
\lipsum
\part{B}
\chapter{chapter B}
\section{Section b}
\lipsum
\end{document}
