xml - XSD validation - ANY in SEQUENCE ("Unique Particle Attribution") -


i have following xsd schema:

<xsd:schema xmlns="http://www.mynamespace.test/" xmlns:xsd="http://www.w3.org/2001/xmlschema" targetnamespace="http://www.mynamespace.test/" elementformdefault="qualified" attributeformdefault="unqualified">     <xsd:include schemalocation="../components.xsd"/>     <xsd:element name="po" type="potype"/>     <xsd:complextype name="potype">         <xsd:sequence>             <xsd:element ref="pa" maxoccurs="unbounded"/>             <xsd:element ref="pb" maxoccurs="unbounded"/>             <xsd:any minoccurs="0" />         </xsd:sequence>         <xsd:attributegroup ref="someattrgroup"/>         <xsd:attributegroup ref="someotherattrgroup"/>     </xsd:complextype> </xsd:schema>

where want make sure po element contains pa elements , pb elements (pa before pb), there kind of elements allowed in front of pa, in between pa , pb , after pb... tried adding xsd:any @ places, 1 of them not possible because of "unique particle attribution".

i understand why raises error (can't tell difference between existing pb element belong part or actual pb in sequence). see no way of how achieve want: possible @ all, , how done?

ps: elements can in same namespace pa , pb elements, not pa/pb elements itself.

where want make sure po element contains pa elements , pb elements (pa before pb), there kind of elements allowed in front of pa, in between pa , pb , after pb...

you cannot in xsd 1.0, can in xsd 1.1 because of relaxed unique particle attribution requirements:

<xsd:schema xmlns="http://www.mynamespace.test/"             xmlns:xsd="http://www.w3.org/2001/xmlschema"              targetnamespace="http://www.mynamespace.test/"              elementformdefault="qualified"             attributeformdefault="unqualified"             xmlns:vc="http://www.w3.org/2007/xmlschema-versioning"              vc:minversion="1.1">     <xsd:include schemalocation="../components.xsd"/>     <xsd:element name="po" type="potype"/>     <xsd:complextype name="potype">         <xsd:sequence>             <xsd:any minoccurs="0" />             <xsd:element ref="pa" maxoccurs="unbounded"/>             <xsd:any minoccurs="0" />             <xsd:element ref="pb" maxoccurs="unbounded"/>             <xsd:any minoccurs="0" />         </xsd:sequence>         <xsd:attributegroup ref="someattrgroup"/>         <xsd:attributegroup ref="someotherattrgroup"/>     </xsd:complextype> </xsd:schema>

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