Cause
This error occurs if you attempt to create a mapping method for a property that is referred to in a condition method.
Action
Perform one of the following actions.
If you intend the method to be a mapping method, remove the reference to the property in the condition method.
If you do not intend the method to be a mapping method, rename the method (by deleting and adding it again) so that it does not have the same name as an existing property.