The header element cannot have "xsi:nil" as an attribute.
Substitution group is bindingOpMsgExt.
The header element in XML instance can be substituted with other elements.
Use of this attribute is optional.
Its form is unqualified.
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Base type of localname is NMTOKEN. There are several restrictions on the value. The schema processor collapses value's whitespace. The value must match "\c+".
Use of this attribute is required.
Its form is unqualified.
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Base type of part is a list of NMTOKEN. There are several restrictions on the list. The number of items in the list is greater than or equals to 1. There are several restrictions on the list item value. The schema processor collapses value's whitespace. The value must match "\c+".