IDMapper: 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/IDMapper - from package: topp

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

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