Unique identifier - Character string that differentiates the error message from other error messages
One or more parameters - Placeholders for the specific classes, methods, and qualifiers that are cited in the exception message
For example, the MOF Compiler may return the following exception message:
REF_REQUIRED is the unique identifier.
CIM_Docked is the parameter. A parameter can be replaced with the name of any appropriate class, property, method, or qualifier.
REF_REQUIRED = Association class CIM_Docked needs at least two refs. Error in line 12.