Was ist falsch an der Dokumentzusammenstellung?

Was ist falsch an der Dokumentzusammenstellung?

Ich erstelle das Dokument automatisch und erhalte die Fehlermeldung. ! Extra alignment tab has been changed to \cr.Ich kenne diesen Fehler, kann aber den Grund in meinem Fall nicht verstehen. Hier ist ein Minimalbeispiel:

    \documentclass{report}
        \usepackage{fancybox,fancyhdr}
        \usepackage[T1]{fontenc}
        \usepackage[dvipsnames]{xcolor}
        \usepackage{fixltx2e}
        \usepackage[normalem]{ulem}
        \usepackage[left=72pt,right=72pt, top=72pt,bottom=72pt,bindingoffset=0cm]{geometry}
        \usepackage{array}
        \usepackage{longtable}
        \usepackage[export]{adjustbox}
        \newcolumntype{R}[2]{>{\raggedleft \arraybackslash \hspace{0pt}}{#2}{#1}}
        \newcolumntype{L}[2]{>{\raggedright\arraybackslash}{#2}{#1}}
        \newcolumntype{C}[2]{>{\center\arraybackslash}{#2}{#1}}
    \fancyhead[C]{\noindent\sbox{0}{\parbox{\textwidth}{\noindent\begin{longtable}{c}Text\end{longtable}}}
        \ifdim\dimexpr\ht0+\dp0<14pt
        \dp0\dimexpr14pt-\ht0\fi
        \makebox{\usebox{0}}\\}\begin{document}
        \pagestyle{fancy}
        \noindent\sbox{0}{\parbox{\textwidth}{
    \noindent\begin{longtable}{L{\textwidth}{p}}list 
    \begin{itemize}
    \item item
    \end{itemize}
    \end{longtable}}}
        \ifdim\dimexpr\ht0+\dp0<240.44036697248pt
        \dp0\dimexpr240.44036697248pt-\ht0\fi
        \makebox{\usebox{0}}\\
    \noindent\begin{longtable}{L{450mm}{p}}Love\\\end{longtable}
    \begin{longtable}{p{90mm}R{40mm}{p}rc}
                Own party & &  Unscored \\ [10pt]
                Own parties & & & \\ [10pt]
            Entity that is contracting on our behalf \\{Which of our own parties is contracting on our behalf?}&{Unknown}&Unscored& \\ [10pt]
        Reference name \\ {Reference name used to refer to the own party}&{Unknown}&Unscored& \\ [10pt]
        \end{longtable}

        \begin{longtable}{p{90mm}R{40mm}{p}rc}
                Counterparties & &  Unscored \\ [10pt] 
                Counterparty & & & \\ [10pt]
        Reference name \\{Reference name used to refer to the counterparty}&{Unknown}&Unscored& \\ [10pt] 
        Counterparty identity\\{None provided}&{Unknown}&Unscored& \\[10pt] 
        Whether we are contracting with a company, branch, individual or some other kind of entity? \\ {The type of entity you are planning to contract with is really important when deciding whether the deal is appropriate. For example, you can hold a company to account for most contract terms it agrees to. But the same is not true when you are dealing with an individual - they might be able to get out of these terms even if they had signed up to them. }&{Unknown}&Unscored& \\[10pt]
Name of counterparty \\ {None provided}&{Unknown}&Unscored& \\[10pt]
       \end{longtable}
       \end{document}

Der Fehler verschwindet, wenn ich einen Teil des Textes entferne ( For example, you can hold a company...) oder wenn ich Parbox aus der Kopfzeile entferne, oder wenn ich Parbox aus der ersten Longtable entferne..... ich kann nicht verstehen, warum das passiert??? Wie behebe ich den Fehler, ohne Teile des Dokuments zu entfernen?

Können Sie mir bitte erklären, was in diesem Fall falsch ist?

Update (aufgrund Kommentare): wenn die letzte Tabelle so aussieht (ohne last \\), funktioniert es nach kleinen TEXT-Änderungen immer noch nicht:

\begin{longtable}{p{90mm}R{40mm}{p}rc}
                Counterparties & &  Unscored \\ \\ 
                Counterparty & & & \\ \\
        Reference name \\{Reference name used to refer to the counterparty}&{Unknown}&Unscored& \\ \\ 
        Counterparty identity\\{None provided}&{Unknown}&Unscored& \\ \\ 
        Whether we are contracting with a company, branch, individual or some other kind of entity? \\ {The type of entity you are planning to contract with is really important when deciding whether the deal is appropriate. For example, you can hold a company to account for most contract terms it agrees to. But the same is not true when you are dealing with an individual - they might be able to get out of these terms even if they had signed up to them. }&{Unknown}&Unscored& \\ \\ 
Name of counterparty \\ {None provided}&{Unknown}&Unscored& \\ 
       \end{longtable}
       \end{document}

Antwort1

Verwenden Sie nicht \\ \\. Wenn Sie mehr Platz benötigen, verwenden Sie etwas wie , das nach der Zeile 10pt hinzufügt. Und verwenden Sie \\[10pt]in Ihrer Header-Definition natürlich und _ nicht_ .\fancyheadtabularlongtable

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