<ExtendedAttribute> Element

An extended attribute is a custom field. The definition depends on whether an extended attribute is defined within an <ExtendedAttributes> collection, or a <Task>, <Resource>, or <Assignment>. In general, there may be an unlimited number of extended attributes, subject to the limitations described below.

Property	Value
Data Type	ComplexType
Minimum Occurrences	0
Maximum Occurrences	Unbounded
Default Value	N/A
Abstract	False
Nillable	False
Element Constraints	Sequence

Each of the individual extended attributes are defined with the following elements. There are no limits to the number of children that may appear, but Microsoft Office Project 2003 will only accept the default names for extended attributes (for example, Flag1, Flag2).

Element	Required/Optional	Description
<FieldID>	Optional	The localized name of the field; you should not use this to identify uniqueness across versions.
<FieldName>	Optional	The name of the custom field.
<Alias>	Optional	The alias of the custom field.
<PhoneticAlias>	Optional	Contains phonetic information in either Hiragana or Katakana for an extended attribute; used only in the Japanese version of Project.
<RollupType>	Optional	Indicates the method used to calculate roll-ups.
<CalculationType>	Optional	Indicates whether roll-ups are calculated for task and group summary rows.
<Formula>	Optional	The formula that Project uses to populate the custom field.
<RestrictValues>	Optional	Indicates whether only values in the list are allowed in the file.
<AppendNewValues>	Optional	Indicates whether new values added to the project are automatically added to the list.
<Default>	Optional	Refers to the ID of the default value in the list; not used if there is no default set.
<ValueList>	Optional	The collection of extended attribute values.

Element	Required/Optional	Description
<UID>	Optional	The unique ID for the extended attribute.
<FieldID>	Optional	The field ID for the extended attribute.
<Value>	Optional	The actual value of the extended attribute.
<ValueID>	Optional	The ID of the value in the extended attribute lookup table.
<DurationFormat>	Optional	An enumeration of the duration format for the extended attribute (day, week, month, etc.).

XML Schema for the <ExtendedAttribute> Element
XML Structure for the <ExtendedAttribute> Element

XML Schema for the <Task> Element
XML Structure for the <Task> Element

XML Schema for the <Resource> Element
XML Structure for the <Resource> Element

XML Schema for the <Assignment> Element
XML Structure for the <Assignment> Element

Remarks

For the <ExtendedAttributes> collection Two pieces of data are necessary; a pointer back to the extended attribute table which is specified either by the unique ID or the Field ID, and the value which is specified either with the value, or a pointer back to the value list.

Note When loading a project stored as XML data, a maximum of 5000 <ValueList> elements and 128 <Indicators> elements will be recognized by Microsoft Office Project 2003. All others will be ignored.