DEBUGGER_ILLEGAL_VALUE is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.
Short Dump Classification: I - Internal Kernel Error
You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.
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Variable <runtime parameter> had the value <runtime parameter>.
This value appears to be incorrect.
Illegal value in the debugger.
Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.
Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.
During debugging, an internal debugger variable had an illegal value.
Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.
The program <runtime parameter> was terminated because an unexpected error occurred
during debugging.
DEBUGGER_ILLEGAL_VALUE - debugger illegal value DEBUGGER_ADI_ILLEGAL_PARAMETER - debugger adi illegal parameter DDIC_TYPE_REF_ACCESS_ERROR - ddic type ref access error DDIC_TYPE_RECURSION - ddic type recursion DDIC_TYPE_NOT_FOUND - ddic type not found DDIC_TYPE_INCONSISTENCY - ddic type inconsistency