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XPath expression: You might be using the false() XPath function to test for node existence. To test for node existence, compare false() with the results of using the boolean()function on the node.
This is an XPath validation message.
Explanation
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Resolution
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The node that an XPath expression evaluates
to is being set or compared to the results of the false function.
The false function returns a value of false.
To
test for the existence of a node, use the boolean function.
The following route condition tests whether the node for the stringVar variable does
not exist:
boolean(/process_data/@stringVar) = false()
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Ensure that you are using the false function
correctly. (See false.)
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