_main.tex

% koma_env.tex
\documentclass[a4paper]{scrlttr2}
\usepackage[top=2cm, bottom=1cm, left=2cm, right=2cm]{geometry}
\usepackage{graphicx}
\usepackage{lmodern}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}
\usepackage{color}
\usepackage[hidelinks]{hyperref}

\usepackage[german]{invoice}


\renewcommand{\familydefault}{\sfdefault}

% include meta data
\include{_data}

\setkomavar{fromname}{\senderName}
\setkomavar{fromaddress}{\senderStreet \\ \senderZIP \ \senderCity}
\setkomavar{place}{\senderCity}
\setkomavar{date}{\invoiceDate}
\setkomavar{fromphone}{\senderTelephone}
\setkomavar{frommobilephone}{\senderMobilephone}
\setkomavar{fromemail}{\href{mailto:\senderEmail}{\nolinkurl{\senderEmail}}}
\setkomavar{subject}{Rechnung}
\setkomavar{location}{
  \\[\baselineskip] \\[\baselineskip]
  \flushright \small {\vspace{1cm}Rechnungsnummer: 
  \invoiceReference}
}

\setkomavar{firsthead}{\hfill
   \parbox[t][\headheight][t]{6cm}{%
   \footnotesize
   \raggedright
   \flushright
   \color[gray]{.3}%
	\begin{tabular}{rl}
		 Anschrift & \usekomavar{fromname}\\
		 & \senderStreet\\
		 & \senderZIP  \ \senderCity \\
		 \\
		 %\Telefon \ Telefon:  \` \senderTelephone \\
		 Mobil  & \usekomavar{frommobilephone} \\
		 E-Mail  & \usekomavar{fromemail} \\
		 Webseite & {\normalfont\ttfamily  \senderWeb } \\
		 \\
		 Steuernummer & \taxID \\
		 \\
		 Institut & \accountBankName \\
		 IBAN & \accountIBAN \\
		 BIC & \accountBIC
	\end{tabular}	 			    
   }%
}


\begin{document}
	\begin{letter}{\customerCompany \\ \customerName \\ 
	\customerStreet \\ \customerZIP \ \customerCity}
	
			\includegraphics[width=0.15\textwidth]{logo.png}			
			\opening{\invoiceSalutation}
			\invoiceText
		    \begin{invoice}{Euro}{0}
			    \input{_invoice}
		    \end{invoice}
		\ps Im ausgewiesenen Betrag ist gemäß § 19 UStG keine Umsatzsteuer 
		enthalten.
		
		\renewcommand*{\raggedsignature}{\raggedright} 
		\closing{\invoiceClosing}
		\invoiceEnclosures



	\end{letter}
\end{document}