After you use a LIBNAME statement with the JSON engine, you might see the following error in the SAS log:
ERROR: Invalid JSON in input near line XXX column XXX: Some code points did not transcode.
This error typically occurs when UTF-8 characters in the data set do not map to the default SAS session encoding.
To prevent this error from appearing, open a Unicode session of SAS:
If you are still experiencing this issue, contact SAS Technical Support.