COBRT161 Illegal intermediate code (Fatal)
The intermediate code which is currently being processed is not valid code. You are probably trying to execute a corrupted file or one which has not been submitted to your COBOL system successfully.
COBRT167 Too many USING items (Fatal)
The list of items which you have supplied in a CALL....USING statement is longer than the run-time system can handle.
COBRT171 Japanese operations illegal with this RTS (Fatal)
You are trying to perform Japanese operations with a non-Japanese run-time system, or you have used a Japanese version of your COBOL system to produce code which you are now trying to run using a non-Japanese run-time system.
COBRT173 Called program file not found in drive/directory (Fatal)
You have tried to call a program which is not present on your current logged-in drive or directory, or in a directory pointed to by the COBDIR environment variable, or to send a message to a class which cannot be loaded.
COBRT174 Imported file not found (Fatal)
You have tried to load a .dll file which contains references to another .dll file which cannot be found by the operating system.