E812 How to troubleshoot this debug log 078N error

Hi, pls guide me on how to pinpoint the rootcause from the below jdebug log where it ended up with fetch from cache I570411 failed....In this customised program, it captured 078N error code..

Oct 08 09:51:31.280782 - 7372/4300 WRK:Starting jdeCallObject	Calling Business function F570411ReadCacheEntry from UNKNOWN for NORKHUSNA. Application Name [P5743141], Version [CMPS0001] (BSFNLevel = 2)
Oct 08 09:51:31.280783 - 7372/4300 WRK:Starting jdeCallObject	**********************************************************************************
Oct 08 09:51:31.280784 - 7372/4300 WRK:Starting jdeCallObject	*** Start dumping data structure for business function F570411ReadCacheEntry
Oct 08 09:51:31.280785 - 7372/4300 WRK:Starting jdeCallObject	**********************************************************************************
Oct 08 09:51:31.280786 - 7372/4300 WRK:Starting jdeCallObject	IN->[  1] <Item>: mnJobnumberA                     <type>: MATH_NUMERIC     <Value>: [20]
Oct 08 09:51:31.280787 - 7372/4300 WRK:Starting jdeCallObject	IN->[  2] <Item>: cActionCode2                     <type>: CHAR             <Value>: []