GEN_RSYN_PATTE_ILLEGAL_SYMBOL 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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Please see search hints for more details about the possible cause of this runtime error and how it could be avoided.
Please see send to sap for more details about the possible cause of this runtime error and how it could be avoided.
Syntax error in RSYN statement PATTE (incorrect symbol number <runtime parameter>)
Please see internal error for more details about the possible cause of this runtime error and how it could be avoided.
During generation, symbol number <runtime parameter> was detected in a PATTE statement.
This is greater than the maximum value (<runtime parameter>). This situation is
probably due to an error in the RSYN.
Please see internal gen error for more details about the possible cause of this runtime error and how it could be avoided.