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O2U-00207:

None of the characters in an attribute name were legal identifier characters
Cause: None of the characters in the name of an attribute of a type could be translated to a character that can begin a C or C++ identifier, such as a letter or an underscore. To find the affected attribute, look in the declaration generated for this type for data member names that are obviously incorrect.
Action: Specify an explicit translation for the attribute name in the INTYPE file.