As a result of the localization support updates and XML Data output format for schematron rules, sml-err-schema.xsd has been completely removed from the third draft.

I still see the namespace mentioned in the SML and SML-IF specs.

Required updates :
1. SMl spec, section 2.3 XML Namespaces, table 2-1
Remove this row : smlerr 	 http://www.w3.org/2008/01/sml-err 	This specification

2. SML-IF
Section 4.1 Packaging 

Replace this 

    <displayName smlerr:localizationid=
                         "xs:anyURI URI identifying the translation
                        resource for the display name" ?> ?
      xs:string Descriptive name of model intended for display
    <displayName/>
    <description smlerr:localizationid=
                         "xs:anyURI URI identifying the translation
                        resource for the description" ?> ?
      xs:string Textual description of model for human consumption
    <description/>

with 

    <displayName smlerr:locid=
                         "xs:anyURI URI identifying the translation
                        resource for the display name" ?> ?
      xs:string Descriptive name of model intended for display
    <displayName/>
    <description sml:locid=
                         "xs:anyURI URI identifying the translation
                        resource for the description" ?> ?
      xs:string Textual description of model for human consumption
    <description/>

3. sml-if.xsd

Replace this 

  <!-- If there is a need for localized string values, e.g. in displayName
       or description, the smlerr:localizationid global attribute can be
       used -->

with

  <!-- If there is a need for localized string values, e.g. in displayName
       or description, the sml:locid global attribute can be
       used -->