CMCEnroll: 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 CentOS possible default full paths are:

/usr/bin/CMCEnroll - from package: pki-java-tools

You may install the required package with command yum install {package}

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