Error code 255 when executing a .bat file

We have a job that is triggered in a script and it runs fine most of the time. There is a dataflow that runs that creates the file used by the job triggered in the script file. About once a month we get an error (usually around the 6th or 7th) with retrun code 255. Any idea what this error code means?

.bat file executed with error: 255: E:\BOBJ\Data Services\bin>E:\BOBJ\DATASE~1/bin/AL_RWJ~1.EXE "E:\BOBJ\Data Services\log/JobServer_1/" -w "inet:USHDC2933:3500" -C "//ushdc2933/ds/TT/B_JOB_DTE_TT_DAILY_CASES.txt"