bulkissuance: 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/bulkissuance - from package: pki-native-tools

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

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