Verifies that the transformation-source node of the specified mapping source exists and assigns the logical value to a mapping destination.
To verify that the transformation-source node of the specified mapping source exists and assign the logical value to a mapping destination, you use the check node function. The following figure shows an example that uses the check node function.
Figure 6-16 Usage example of the check node function
To verify that the transformation-source node of the specified mapping source exists: