For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.
For the latest documentation on Visual Studio 2017, see C28226 on docs.microsoft.com. Warning C28226: Annotation cannot also be a PrimOp (in current declaration)
This warning indicates that the named annotation is being declared as a PrimOp, and also was previously declared as a normal annotation. This should not be possible if the standard macros are being used for annotations; this warning is not expected to be seen in normal use.