exchange web services restriction paths

Question

I have done a bit of searching and am unable to find a list of legal properties for use with the FindItem <Restriction> element, specificially what can I use in

<IsEqualTo><FieldURI FieldURI="???"></IsEqualTo>

that will not result in a ErrorUnsupportedPathForQuery error?

(Using EWS Exchange2010_SP1)

Answer 1

I wrote an integration test which performs a FindItem using an exists filter for each of the UnindexedFieldURIType. Sorry private project, can't post code.

These fields work:

• ITEM_BODY
• CONVERSATION_GLOBAL_UNIQUE_UNREAD_SENDERS
• MESSAGE_IS_DELIVERY_RECEIPT_REQUESTED
• ITEM_LAST_MODIFIED_NAME
• CONVERSATION_GLOBAL_UNIQUE_SENDERS
• CONTACTS_CHILDREN
• FOLDER_CHILD_FOLDER_COUNT
• CONVERSATION_FLAG_STATUS
• CONTACTS_INITIALS
• ITEM_INTERNET_MESSAGE_HEADERS
• CONTACTS_MILEAGE
• TASK_STATUS
• CONTACTS_FILE_AS
• CONVERSATION_MESSAGE_COUNT
• ITEM_DATE_TIME_CREATED
• CONVERSATION_LAST_DELIVERY_TIME
• CALENDAR_IS_RECURRING
• TASK_OWNER
• CONTACTS_DISPLAY_NAME
• TASK_ASSIGNED_TIME
• CONVERSATION_GLOBAL_FLAG_STATUS
• CONTACTS_FILE_AS_MAPPING
• CONVERSATION_SIZE
• CONTACTS_OFFICE_LOCATION
• CALENDAR_APPOINTMENT_SEQUENCE_NUMBER
• CALENDAR_CONFERENCE_TYPE
• CALENDAR_MEETING_WORKSPACE_URL
• CALENDAR_MEETING_REQUEST_WAS_SENT
• CONTACTS_GIVEN_NAME
• CONVERSATION_HAS_ATTACHMENTS
• MESSAGE_RECEIVED_BY
• FOLDER_DISPLAY_NAME
• CONVERSATION_GLOBAL_SIZE
• CONTACTS_BUSINESS_HOME_PAGE
• TASK_COMPANIES
• FOLDER_TOTAL_COUNT
• ITEM_DATE_TIME_SENT
• CALENDAR_APPOINTMENT_REPLY_TIME
• ITEM_SENSITIVITY
• TASK_IS_RECURRING
• ITEM_DATE_TIME_RECEIVED
• CONTACTS_MIDDLE_NAME
• CONTACTS_JOB_TITLE
• MESSAGE_FROM
• CONTACTS_PROFESSION
• ITEM_ITEM_CLASS
• CONTACTS_BIRTHDAY
• MEETING_RESPONSE_TYPE
• FOLDER_FOLDER_CLASS
• CONTACTS_WEDDING_ANNIVERSARY
• MESSAGE_IS_RESPONSE_REQUESTED
• TASK_DELEGATION_STATE
• CALENDAR_APPOINTMENT_STATE
• MESSAGE_RECEIVED_REPRESENTING
• CONVERSATION_GLOBAL_MESSAGE_COUNT
• CALENDAR_MY_RESPONSE_TYPE
• TASK_BILLING_INFORMATION
• ITEM_CATEGORIES
• MESSAGE_INTERNET_MESSAGE_ID
• ITEM_SUBJECT
• FOLDER_UNREAD_COUNT
• CALENDAR_NET_SHOW_URL
• ITEM_IMPORTANCE
• ITEM_CONVERSATION_ID
• TASK_IS_TEAM_TASK
• TASK_DELEGATOR
• CONTACTS_HAS_PICTURE
• CALENDAR_ORGANIZER
• MESSAGE_IS_READ_RECEIPT_REQUESTED
• TASK_MILEAGE
• CONTACTS_MANAGER
• CONTACTS_POSTAL_ADDRESS_INDEX
• ITEM_DISPLAY_TO
• CONVERSATION_ITEM_CLASSES
• TASK_ACTUAL_WORK
• TASK_TOTAL_WORK
• CONTACTS_ASSISTANT_NAME
• CONVERSATION_GLOBAL_UNREAD_COUNT
• CALENDAR_LOCATION
• MESSAGE_SENDER
• CONTACTS_SURNAME
• CALENDAR_LEGACY_FREE_BUSY_STATUS
• TASK_DUE_DATE
• TASK_IS_ASSIGNMENT_EDITABLE
• CALENDAR_IS_ALL_DAY_EVENT
• MESSAGE_REFERENCES
• CONVERSATION_GLOBAL_UNIQUE_RECIPIENTS
• TASK_CHANGE_COUNT
• CONTACTS_SPOUSE_NAME
• CONVERSATION_UNREAD_COUNT
• CONVERSATION_IMPORTANCE
• ITEM_IN_REPLY_TO
• CALENDAR_WHEN
• ITEM_REMINDER_IS_SET
• MESSAGE_CONVERSATION_TOPIC
• MESSAGE_CONVERSATION_INDEX
• TASK_PERCENT_COMPLETE
• TASK_COMPLETE_DATE
• CONVERSATION_UNIQUE_UNREAD_SENDERS
• CALENDAR_START
• TASK_IS_COMPLETE
• CONVERSATION_UNIQUE_RECIPIENTS
• ITEM_REMINDER_MINUTES_BEFORE_START
• CONVERSATION_GLOBAL_HAS_ATTACHMENTS
• CONVERSATION_GLOBAL_IMPORTANCE
• ITEM_SIZE
• TASK_CONTACTS
• CALENDAR_ALLOW_NEW_TIME_PROPOSAL
• CONTACTS_DEPARTMENT
• CONVERSATION_GLOBAL_LAST_DELIVERY_TIME
• CALENDAR_END
• POSTITEM_POSTED_TIME
• CALENDAR_TIME_ZONE
• ITEM_LAST_MODIFIED_TIME
• CONTACTS_NICKNAME
• MEETING_REQUEST_INTENDED_FREE_BUSY_STATUS
• TASK_START_DATE
• CONTACTS_COMPANY_NAME
• MEETING_HAS_BEEN_PROCESSED
• CONVERSATION_UNIQUE_SENDERS
• ITEM_DISPLAY_CC
• CONTACTS_GENERATION

It's worth noting that of the fields that produce an error, most fail with an ERROR_UNSUPPORTED_PATH_FOR_QUERY, but others fail with a ERROR_INVALID_PROPERTY_FOR_EXISTS. That suggests that some fields work with some some SearchExpressionTypes while others don't.