Data Services cmd failing with exit code 1 and error 50306

Guys,

I am trying to run below command through Data Service using Script, this script will try to delete files older than 6 days, this works perfectly fine when i run from cmd prompt and i am getting exit code 1 error from DS, need expert help here.

print(exec('cmd.exe','forfiles /p "D:\\Test" /s /d -6 /c "cmd /c del @file"',1));

Error:

Job <DEL_SCRIPT> is terminated due to error <50306>.

Function <exec> failed to execute program <cmd.exe forfiles /p "D:\Test" /s /d -6 /c "cmd /c del @file">. Program terminated

with exit code <1>.

Thanks

Nitin