this is a problem in the SAP program SAPLSHL2 with kernel release 6.20. There
are some additional checks active that make sense for unicode systems only.
To avoid the error, please change the program attributes of the program SAPLSHL2
with transaction SE38, "Program attributes":
"No unicode checks active"
(SE38, program attributes)
Do not forget to generate the program later in SE38.
We will also
contact SAP to get an official correction in a future SAP patch.