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Error when updating bug work item in Scrum for System version 3 template with TFS 2010

Jun 4, 2013 at 9:28 AM
i am using TFS 2010 with visual studio 2010 and my process template is Scrum for Team System v3

i want to add new field in my Bug work item using TFS Power Tools

this field will is a combo box with holds only two values (yes , No) and this field is required

this is the XML file for this filed
<FieldDefinition reportable="dimension" refname="Diagnosoft.Regression" name="DsRegression" type="String">
  <ALLOWEDVALUES>
   <LISTITEM value="Yes" />
   <LISTITEM value="New" />
  </ALLOWEDVALUES>
  <REQUIRED />
  <HELPTEXT>Bug Regression Type</HELPTEXT>
</FieldDefinition>
when saving i have this error message
The 'not' attribute is invalid - The value '' is invalid according to its datatype
'http://schemas.microsoft.com/VisualStudio/2008/workitemtracking/
typelib:IdentityName' - The Pattern constraint failed.
, i searched and find i enter valid values for (not,for) attributes
i have added valid values for ( not , for ) attributes but still have the same message

this is the XML for Field after adding (not , for) attribute
<FieldDefinition reportable="dimension" refname="Diagnosoft.Regression" name="DsRegression" type="String">
  <ALLOWEDVALUES for="[Global]\Project Collection Valid Users" not="[Global]\Developers">
    <LISTITEM value="Yes" />
    <LISTITEM value="New" />
  </ALLOWEDVALUES>
  <REQUIRED for="[Global]\Project Collection Valid Users" not="[Global]\Developers" />
  <HELPTEXT>Bug Regression Type</HELPTEXT>
</FieldDefinition>
Jun 4, 2013 at 5:20 PM
Mohammed,

Your question does not seem to be specific to any of the SfTS features, so you may get a better response by posting to the MSDN forum for TFS process templates.