Elements of type Narrow Character are elements of character data type with the additional restriction that the only allowable characters are those contained within the ISO Latin-1 character set. The Binary data type is a compound type consisting of threee logical elements. Boolean indicates a logical True or False condition. The physical representation of Boolean data is specified by each implementation specification corresponding to this message specification. Decimal indicates a numeric value that meets the following rules: Long is an integer value, which may be positive, negative, or zero, with values ranging from -2147483648 to 2147483647. Object identifiers in the IFX Specification are of the data type "Identifier." This is a Narrow Character data type with a maximum length of 36. UUID elements are Narrow Character with a maximum length of 36. Section 3.2.1.5 Section 5.4.2.4.1 Section 5.4.2.4.2