xmlplan2plan: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/xmlplan2plan - from package: galax-extra

You may install the required package with command apt-get install {package}

Error in other languages:
xmlplan2plan: bevel nie gevind nie
xmlplan2plan: comandă negăsită
xmlplan2plan: comando não encontrado
xmlplan2plan: commande introuvable
xmlplan2plan: command not found
xmlplan2plan: käsku ei ole
xmlplan2plan: không tìm thấy lệnh
xmlplan2plan: komanda nerasta
xmlplan2plan: Kommando nicht gefunden.
xmlplan2plan: kommandot finns inte
xmlplan2plan: komut yok
xmlplan2plan: nie znaleziono polecenia
xmlplan2plan: níor aimsíodh an t-ordú
xmlplan2plan: no se encontró la orden
xmlplan2plan: no s'ha trobat l'ordre
xmlplan2plan: opdracht niet gevonden
xmlplan2plan: parancs nem található
xmlplan2plan: perintah tidak ditemukan
xmlplan2plan: príkaz nenájdený
xmlplan2plan: příkaz nenalezen
xmlplan2plan: команда не найдена
xmlplan2plan: командата не е открита
xmlplan2plan: 命令找不到
xmlplan2plan: コマンドが見つかりません