Hi!
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I do not know a good answer to your question. It depends on particular applications, intended use, etc.
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There is a check SD1029 (non-ASCII chars), which is limited to SDTM variables, which can be used as variable names or labels (–TEST, --QLABEL, --PARM, --TESTCD, QNAM, --PARMCD).
“Variables value must not include non-ASCII or non-printable characters (outside of 32-127 ASCII code range), limited to variables which values may be converted into new variable name or label (–TEST, --TESTCD, --PARM, --PARMCD, QLABEL, QNAM)”
Regards,
Sergiy