Buenas,
eliminar un WorkItem no es una tarea que sea de las más recomendadas. Principalmente porque si has creado un WI que no es útil, es decir te has equivocado, pues quien te dice que no te equivoques y elimines un WI que no es el correcto. Asi que sobre estas bases, nuestros amigos de Redmond habían escondido esta opción muy dentro de las tripas de TFS y hasta las power tools de TFS2008, no teníamos opción de eliminar un WI.
En Team Foundation Server 2010 se ha incorporado una nueva herramienta llamada WitAdmin que entre otras cosas nos permite eliminar un WorkItem desde la línea de comandos con la siguiente sintaxis:
C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE>witadmin.exe destroywi /collection:http://<tfs>:8080/tfs/<tpc> /id:<WorkItemId>
donde <tfs> es el nombre de nuestro server, <tpc> es la Team Project Collection sobre la que trabajaremos y finalmente <WorkItemId> es el id del WI que se desea eliminar.
Además de poder eliminar un WI, estas son otras opciones que provee la herramienta:
- changefield
Changes properties of the field.
Usage: witadmin changefield /s server /n typename [/name newname]
[/syncnamechanges true|false] [/noprompt]/s Specifies the Team Foundation application-tier server. Either use the application-tier server name, or a fully
specified URL such as http://tfs:8080.
/n The reference name of the field.
/name The new name of the field.
/syncnamechanges Indicates whether or not the field’s values should be
updated in response to identity name changes.
/noprompt Turns off the confirmation message. - deactivatelinktype
Deactivates the specified link type. Users will no longer be able to create
new links with this type. Existing links of this type will continue to function
correctly.Usage: witadmin deactivatelinktype /s server /n typename
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/n Specifies the link type to deactivate using either the link type name
or reference name. - deletefield
Deletes the specified field using the reference name.
Usage: witadmin deletefield /s server /n typename [/noprompt]
/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/n Specifies the reference name of the field to be deleted.
/noprompt Turns off the confirmation message. - deletelinktype
Deletes the specified link type from the specified server.
Usage: witadmin deletelinktype /s server /n typename [/noprompt]
/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/n Specifies the link type to delete. The link type name or
reference name can be used.
/noprompt Turns off the confirmation message. - destroygloballist
Destroys a global list.
Usage: witadmin destroygloballist /s server /n typename [/noprompt] [/force]
/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/n Specifies the name of the global list to destroy.
/noprompt Turns off the confirmation message.
/force Turns off validation that the an item is not in use before being
destroyed. - destroywi
Destroys a work item or work items. Currently, work items can only be
destroyed. Destroying a work item means the work item is physically deleted
and cannot be restored. The system does not support logical (and thus
recoverable) deletion of work items.Usage: witadmin destroywi /s server /id id [/noprompt]
/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/id Specifies the ID of the work item to destroy. Supports multiple
IDs delimited by commas such as 12,15,23 (with no whitespace).
/noprompt Turns off the confirmation message. - destroywitd
Destroys a work item type. Currently, work item types can only be destroyed.
Destroying a work item type means that work items of that type are physically
deleted and cannot be restored. It does not support logical (and thus
recoverable) delete of work item types.Usage: witadmin destroywitd /s server /p project /n typename [/noprompt]
/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/p Specifies the name of the team project.
/n Specifies the name of the work item type to destroy.
/noprompt Turns off the confirmation message. - exportcategories
Exports the XML definition of a project’s work item type categories.
Usage: witadmin exportcategories /s server /p project [/f filename] [/e
encoding]/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/p Specifies the name of the team project.
/f Specifies the destination file for exporting the work item type
category XML. If not specified, the XML is output to the display.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used. - exportgloballist
Exports the XML definition of global lists defined on a Team Foundation
Server.Usage: witadmin exportgloballist /s server [/f filename] [/e encoding]
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/f Specifies the destination file for exporting the global list XML. When
it is not specified, the XML is output to the display.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used. - exportlinktype
Exports the XML definition of a link type.
Usage: witadmin exportlinktype /s server [/n typename] [/f filename] [/e
encoding]/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/n Specifies the name of the work item link type that is to be exported.
/f Specifies the destination file for exporting the link type XML. When it
is not specified, the XML is output to the display.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used. - exportwitd
Exports the XML definition of a work item type.
Usage: witadmin exportwitd /s server /p project /n typename [/f filename] [/e
encoding] [/exportgloballists]/s Specifies the Team Foundation application-tier server.
Either use the application-tier server name, or a fully
specified URL such as http://tfs:8080.
/p Specifies the name of the team project.
/n Specifies the name of the work item type to export.
/f Specifies the destination file for exporting the work
item type XML. If not specified, the XML is output to
the display.
/e Specifies the name of the .NET Framework 2.0 encoding
used to import the XML. For example, /e utf-7 will use
Unicode (UTF-7) encoding. By default, encoding is
automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is
used.
/exportgloballists Exports the definitions of referenced global lists. If
not specified, global list definitions are omitted.
- importcategories
This command imports a work item type category XML file into a team project on
a Team Foundation Server. If a category with the same name already exists, the
new category definition will overwrite the existing definition. If the work
item type does not already exist, a new category will be created.Usage: witadmin importcategories /s server /p project /f filename [/e
encoding]/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/p Specifies the team project in which the categories are imported.
/f Specifies the work item type category XML file to import.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used. - importgloballist
Imports global lists from an XML definition file onto a Team Foundation
Server. If a global list that has the same name already exists, the imported
definition will overwrite the existing definition. If a global list does not
already exist, a new one will be created.Usage: witadmin importgloballist /s server /f filename [/e encoding]
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/f Specifies the global list XML definition file to be imported.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used. - importlinktype
Imports a link type XML definition file into Team Foundation Server. If a link
type with the same reference name already exists, it will be updated to match
the imported link type. If the link type does not already exist, a new link
type will be created.Usage: witadmin importlinktype /s server /f filename [/e encoding] [/v]
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/f Specifies the file that contains the link type XML to import.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used.
/v Validates the work item type or link type XML without importing it. - importwitd
This command imports a work item type XML definition file into a team project
on a Team Foundation Server. If a work item type with the same name already
exists, the new work item type definition will overwrite the existing
definition. If the work item type does not already exist, a new work item type
will be created.Usage: witadmin importwitd /s server [/p project] /f filename [/e encoding]
[/v]/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/p Specifies the team project in which the new work item type is imported.
This is required, except when the validation-only option is used.
/f Specifies the work item type XML definition file to import.
/e Specifies the name of the .NET Framework 2.0 encoding used to import
the XML. For example, /e utf-7 will use Unicode (UTF-7) encoding. By
default, encoding is automatically detected when it is possible. If the
encoding can not be detected automatically, UTF-8 is used.
/v Validates the work item type or link type XML without importing it. - indexfield
This command turns indexing for a field on or off.
Usage: witadmin indexfield /s server /n name /index on|off
/s Specifies the Team Foundation application-tier server. Either use
the application-tier server name, or a fully specified URL such as
http://tfs:8080.
/n The reference name of the field whose indexing information will be
updated.
/index Specifies whether the field should be indexed. - listfields
Shows field information. By default, this lists all fields on the Team
Foundation Server. Optional parameters can be used to list only specific
fields.Usage: witadmin listfields /s server [/n typename] [/unused]
/s Specifies the Team Foundation application-tier server. Either use
the application-tier server name, or a fully specified URL such as
http://tfs:8080.
/n The reference name of the field to display.
/unused Shows all fields that are not being used on the Team Foundation
Server. - listgloballist
Lists the names of the global lists on a server.
Usage: witadmin listgloballist /s server
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080. - listlinktypes
Lists the available set of link types on a server.
Usage: witadmin listlinktypes /s server
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080. - listwitd
Lists the names of the work item types in the given project.
Usage: witadmin listwitd /s server /p project
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/p Specifies the name of the team project. - reactivatelinktype
Activates the specified link type. Users will be able to create new links
with this type.Usage: witadmin reactivatelinktype /s server /n typename
/s Specifies the Team Foundation application-tier server. Either use the
application-tier server name, or a fully specified URL such as
http://tfs:8080.
/n Specifies the link type to activate using either the name or reference
name. - rebuildcache
This command invalidates cached data about work item types on all clients.
Each client will refresh its cache the next time that it connects to the
server. To avoid server performance issues, you should not run this command
during typical operating hours.Usage: witadmin rebuildcache /s server [/noprompt]
/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/noprompt Turns off the confirmation message. - renamewitd
Renames an existing work item type. Changes the display name of a work item
type within a specific project. Also, the work items of that type are updated
to reflect the new work item type name.Usage: witadmin renamewitd /s server /p project /n typename /new newname
[/noprompt]/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/p Specifies the name of the team project.
/n Specifies the name of the work item type to rename.
/new Specifies the new name for the work item type.
/noprompt Turns off the confirmation message. - reportfield
Specifies whether and how the field is included in the data warehouse for
reporting. For more information about how to use fields for reporting, see
http://go.microsoft.com/fwlink/?LinkId=78060.Usage: witadmin reportfield /s server /n typename /t type [/formula formula]
[/noprompt]/s Specifies the Team Foundation application-tier server. Either
use the application-tier server name, or a fully specified URL
such as http://tfs:8080.
/n Reference name of the field.
/t Specifies how the field is used in the warehouse for reporting
(dimension, detail, measure, disable).
/formula Specifies a formula when the field is reported as a measure. The
only supported formula is sum.
/noprompt Turns off the confirmation message.
Saludos @ Alicante
El Bruno
Referencias WitAdmin: http://blogs.microsoft.co.il/blogs/shair/archive/2009/05/20/visual-studio-2010-witadmin-command-line-utility-commands.aspx
El Bruno 
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