CSTPACIN.COST_INV_TXN: (70): ORA-20100: File o0086078.tmp creation for FND_FILE failed. You will find more information on the cause of the error in request logSolution
In this case we need to check following 3 things
1) Check the UTL file parameter in DB side. Compare it with the APPLPTMP parameter on application side. Both this should match.
2) The file path mentioned in these 2 parameters should contain the space and permissions.
3) Check also the parameter APPLTMP
Please note that, following parameters should be in synch.
Set the same path correctly for all these variables in context file (APPL_TOP/admin/.xml) and run autoconfig. This will resolve the issue.