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Hello, I have a schema that needs to require 1 of 2 elements, but also allow for both of them. So if the elements are A & B, then A alone is valid, B alone is valid, A & B are valid, but ~A & ~B is invalid. I tried the following.. <xs:choice> <xs:sequence> <xs:element name="A" minOccurs="1"/> <xs:element name="B" minOccurs="0"/> </xs:sequence> <xs:sequence> <xs:element name="A" minOccurs="0"/> <xs:element name="B" minOccurs="1"/> </xs:sequence> </xs:choice> But this is not working as it makes the model non-deterministic. Is there a way to solve this? Thanks for your time and kind regards, Brian Gentry
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