This XML schema defines the structure of DMTF message registries. A message registry is an XML instance document following this XML schema. A message registry defines messages that can be used to return errors using embedded instances of CIM_Error and indications based on CIM_AlertIndication. It is recommended that a message registry be created in a single language; the DMTF will publish English message registries only. It is not recommended that the dynamic elements in a message contain translatable text because it would make localization of the message registry difficult. It is also not recommended that the Message property in CIM_Error or CIM_AlertIndication be used for localization. Localization may be performed by clients based on the message ID and local availability of an accordingly translated message bundle. Except for the REGISTRY element, any global element and type definitions in this schema shall not be used by other XML schemas, in order to allow for structural changes in future updates to this XML schema. The top-level element of the message registry. Message registries shall contain one occurence of the REGISTRY element as the only top-level element. A description of the parent element. The description is targeted to developers of an implementation that produces or consumes the message. It does not need to be well suited as an explanation for human consumers of the message. Identification and other details about the message registry. A description of the message registry. A unique identification of the message registry, through its attributes NAME and VERSION. The element also defines the language of the messages through its LANGUAGE attribute. The name of the message registry, for human consumption. The name shall be unique within the owning entity of the message registry (defined by the OWNING_ENTITY element). It should not contain the owning organization as stated in the OWNING_ENTITY element. It should contain the string "Message Registry" if written in English language, or corresponding translations of this string if written in other languages. Example for the value: "WBEM Operations Message Registry". The version of the message registry. The attribute value shall conform to the DMTF versioning rules defined in DSP0004. The language used by all messages defined in the message registry. The attribute value shall conform to the definition of Language Tags defined in RFC2616 (HTTP/1.1 specification). A reference to a specification document the message registry was created for. The title of the document. For documents owned by DMTF, the DSP number of the document, in upper case. For other documents, the attribute shall not be specified. The version of the document. For documents owned by DMTF, the version shall contain the major and minor version number, optionally the update version number and if the update version number is present, optionally one or two draft letters. If the version contains only the major and minor version number, the latest published update version number is meant to be referenced. For documents not owned by DMTF, the version number may be an arbitrary string. For documents owned by DMTF. For documents not owned by DMTF. The version of the CIM Schema the message registry is dependent on. The version of the CIM Schema. The version shall contain the major and minor version number, and optionally the update version number. If the version contains only the major and minor version number, the latest published update version number is meant to be referenced. The name of the owning entity of the message registry (i.e. the business entity or standards body that maintains and owns the message registry), for human consumption. The element content shall include a copyrighted, trademarked or otherwise unique name that is owned by the owning entity. For message registries owned by DMTF, the element content shall be "DMTF". The value of the OwningEntity property in CIM_Error and CIM_AlertIndication instances conveying a message from a message registry shall be set to the element content. The list of messages defined in the message registry. A message defined in the message registry. A name of the message, for human consumption. The attribute value should be unique within the message registry (the MESSAGE_ID is required to be unique, for programmatic access) and should be a brief descriptive text. For example, "HTTP header malformed in POST operation" is preferrable over "protocol error". An indicator on whether or not the message is considered experimental. A value of "true" means the message is experimental. Experimental messages may be removed or changed incompatibly in future revisions of the message registry. The message identifier. The message identifier consists of the PREFIX and SEQUENCE_NUMBER attributes. The combination of these two attribute values shall be unique across all message registries owned by a particular owning entity (as identified by the OWNING_ENTITY element). The value of the MessageID property in CIM_Error and CIM_AlertIndication instances conveying a message from a message registry shall be set to the concatenation of the PREFIX and SEQUENCE_NUMBER attribute values, as specified in the message registry (i.e. no further padding or adjustment of these values takes place). The prefix portion of the message identifier. Typically, the same prefix is used for all messages in a particular message registry, and different prefixes are used for the messages in different message registries. The sequence number portion of the message identifier. The format of the attribute value shall conform to the decimal string representation of an integer value that optionally has leading zeros. It is recommended that the attribute value is padded with leading zeros to a total length of at least four digits. A description of the message. The description is targeted to developers of an implementation that produces or consumes the message. It does not need to be well suited as an explanation for human consumers of the message. The description should cover the purpose of the message and its usage. A profile may further constrain the purpose or the usage of the message within the domain of the profile. Note that each dynamic element within the message can have a description on its own, so this information should not be repeated in this element. The components of the message, as an (ordered) sequence of static elements (i.e. static text) or dynamic elements (i.e. computed values). The value of the Message property in CIM_Error and CIM_AlertIndication instances conveying a message from a message registry shall be set to the concatenation of the message text of all child elements of this element, in the order specified in the message registry. A message component representing a dynamic element within a message. The message text that the dynamic element contributes to the overall message is a string value that is computed at the time the message is issued. The (string typed) MessageArguments array property in CIM_Error and CIM_AlertIndication instances conveying a message from a message registry shall be set to have one array entry for each dynamic element defined in the message, in the order specified in the message registry, where the value of the array entry is the message text of the dynamic element. The message text of the dynamic element should not contain translatable text because it would make localization of the message registry difficult. Instead, any translatable text should go into properly defined static elements. The name of the dynamic element, for programmatic use. The attribute value shall be unique within the message. A reference to a CIM property whose value is to be used as the source for the message text of the dynamic element. The format of the attribute value shall be classname.propertyname, for example: CIM_Fan.ElementName. If the attribute is specified, the value of the referenced property at the time the message is issued shall be used as the message text of the dynamic element. If the attribute is not specified, the DESCRIPTION element of the dynamic element shall specify the source of the message text. The CIM datatype into which the message text of the dynamic element shall be coercible without loss. Note that this constrains the string values in the message text of the dynamic element accordingly. For example, if the attribute value is "sint8", the message text of the dynamic element is constrained to represent an integer value between -128 and +127 in some string representation. As another example, if the attribute value is "reference", the message text of the dynamic element is constrained to be an instance path in some string representation. Requirements on the specific string representation to be used may be defined in the DESCRIPTION element of the dynamic element, and may be further constrained in management profiles using the message. For example, the DESCRIPTION element of a dynamic element with DATATYPE="sint8" might define that the message text is required to be represented as a decimal integer value that always has a sign. An indicator on whether or not the dynamic element is an array. A value of "true" means the dynamic element is an array. If a dynamic element is an array, the DATATYPE attribute shall define the type of each array entry, the message text of the dynamic element array shall be the ordered sequence of array entry values delimited by comma (this is what is put into the array entry of the MessageArguments array property), and the usage of the message text as a component in the Message property should insert curly braces around the message text before being used in the overall message text. An indicator on whether or not the message text of the dynamic element is to be included in the Message property. Note this does not affect the inclusion in the MessageArguments array property. A value of "true" means the message text of the dynamic element shall be included in the Message property. A value of "false" means that the message text of the dynamic element shall not be included in the Message property. This may be used to convey additional details about the message that are not intended for the end user reading the message text in the Message property. A message component representing a dynamic element within a message. The dynamic element is defined by referencing a previously defined DYNAMIC_ELEMENT element in the same message. Other than that, the dynamic element follows the rules defined for the DYNAMIC_ELEMENT element. Specifically, its message text is put into the MessageArguments and Message properties as defined there. The reference to the previously defined DYNAMIC_ELEMENT element. The attribute value shall be the value of the NAME attribute of a previously defined DYNAMIC_ELEMENT element within the same message. A possible value the message text of a dynamic element can have. The possible value is defined by the element content. A message component representing a static element within a message. The message text that the static element contributes to the overall message is its element content. The (string typed) MessageArguments array property in CIM_Error and CIM_AlertIndication instances conveying a message from a message registry shall not be set to have array entries for any static elements defined in the message. The requirement level for implementing the property in CIM_Error or CIM_AlertIndication instances conveying a message from a message registry. Valid values and their meanings are: - "required": The property is required to be implemented and it shall be set to the value of the element content. - "optional": The property is optional to be implemented. If implemented, it shall be set to the value of the element content. If not implemented, the property shall either be set to NULL or not be present in the (embedded) instance. - "discouraged": The property is discouraged from being implemented and should either be set to NULL or not be present in the (embedded) instance. The element content shall be empty in this case. "prohibited": The property is prohibited from being implemented and shall be set to NULL or not be present in the (embedded) instance. The element content shall be empty in this case. Requirements for specific property values to be set in CIM_Error and CIM_AlertIndication instances conveying a message from a message registry. Such instances may have additional properties set, as defined in the CIM Schema or further constrained in profiles using messages. Each child element of this element corresponds to a specific property in these instances. The property value to be set is defined as the element content of the child element. The requirement for setting the property to that value is defined in the EXISTENCE_IS attribute of the child element. There shall be at most one occurence of this element for CIM_Error instances (TYPE="ERROR"), and at most one for CIM_AlertIndication instances (TYPE="ALERT"). If there is no occurence of this element for a particular type of class, instances of that class may be produced, they are just not further constrained to specific property values. Choice for CIM_Error instances (TYPE="ERROR"). Choice for CIM_AlertIndication instances (TYPE="ALERT"). An indicator for the class type whose instances are constrained by this occurence of the element. Valid values and their meanings are: - "ERROR": Instances of CIM_Error are constrained. The child elements shall be those of the choice for CIM_Error (CIMSTATUSCODE, etc.). - "ALERT": Instances of CIM_AlertIndication are constrained. The child elements shall be those of the choice for CIM_AlertIndication (ALERTING_MANAGED_ELEMENT, etc.). A value constraint for the (uint32 typed) CIMStatusCode property in CIM_Error. The element content shall be a decimal string representation of the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. The element content of the DESCRIPTION child element should contain corresponding value of the Values qualifier defined for the property in the CIM Schema and may contain other text. A value constraint for the (uint16 typed) ErrorType property in CIM_Error. The element content shall be a decimal string representation of the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. The element content of the DESCRIPTION child element should contain the corresponding value of the Values qualifier defined for the property in the CIM Schema and may contain other text. A value constraint for the (string typed) OtherErrorType property in CIM_Error. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that according to that description, the property is used only if the ErrorType property has a value of 1 (Other). Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (string typed) ErrorSource property in CIM_Error. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (uint16 typed) ErrorSourceFormat property in CIM_Error. The element content shall be a decimal string representation of the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. The element content of the DESCRIPTION child element should contain the corresponding value of the Values qualifier defined for the property in the CIM Schema and may contain other text. A value constraint for the (string typed) OtherErrorSourceFormat property in CIM_Error. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that according to that description, the property is used only if the ErrorSourceFormat property has a value of 1 (Other). Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (string typed) RecommendedActions array property in CIM_Error. Each occurence of the element represents one array entry. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (string typed) AlertingManagedElement property in CIM_AlertIndication. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (uint16 typed) AlertingElementFormat property in CIM_AlertIndication. The element content shall be a decimal string representation of the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. The element content of the DESCRIPTION child element should contain the corresponding value of the Values qualifier defined for the property in the CIM Schema and may contain other text. A value constraint for the (string typed) OtherAlertingElementFormat property in CIM_AlertIndication. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that according to that description, the property is used only if the AlertingElementFormat property has a value of 1 (Other). Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (uint16 typed) AlertType property in CIM_AlertIndication. The element content shall be a decimal string representation of the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. The element content of the DESCRIPTION child element should contain the corresponding value of the Values qualifier defined for the property in the CIM Schema and may contain other text. A value constraint for the (string typed) OtherAlertType property in CIM_AlertIndication. The element content shall be the value to be used for the property, if implemented. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that according to that description, the property is used only if the AlertType property has a value of 1 (Other). Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. A value constraint for the (uint16 typed) PerceivedSeverity property in CIM_Error and CIM_AlertIndication. The element content shall be a decimal string representation of the value that is recommended to be used for the property, if implemented. Note that the specified value is not required to be used, rather it is advisory and implementations may use other values. The specified value shall be a valid value according to the description of the property in the CIM Schema. Note that a message can only specify a single property value, so if there is a need to use different values depending on some condition, the message needs to be split up into multiple messages. The element content of the DESCRIPTION child element should contain the corresponding value of the Values qualifier defined for the property in the CIM Schema and may contain other text.