NullReasonKeys Fields

The value was asked for but the target did not know that answer

The reason that the value is not provided is that it can be derived from other information

The value was entered but it is invalid according to business rules

The value is available however it has been masked due to privacy concerns

The value is not prvovided because it is negative infinity

The value is not provided because there is no available information

The reason that the requested value was not provided is that it is not applicable (for example last menstrual period of a male)

The value is unavailable because it was not asked for

The value was not provided because it does not fall within the acceptable values

The value is not provided because it is positive infinity

The exact value is not known, but there is sufficient quantity to perform an act

There is a value present, but the quantity of the value is so small that it cannot be registered

The reason that the requested value was not provided is that it is not available

The value is available however it cannot be encoded in the desired format

The value may have been asked for and was not known or is unknown (this differes from AskedUnknown)