scap-as-rpm: 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/scap-as-rpm - from package: openscap-utils

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

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