The Code Conversion Utility replaced a statically configured Call by Reference node with a placeholder node. This version of LabVIEW NXG does not support statically configured Call by Reference nodes.
Statically configured Call by Reference nodes are subVIs with a VI call configuration set to either Reload for each call or Load and retain on first call. The Code Conversion Utility replaces statically configured Call by Reference nodes with a subVI call configured to Load with callers.
Evaluate whether the performance of your application is acceptable. The change that occurred during migration can slow down the performance of your VI because the subVI is loaded with its caller VI instead of being dynamically loaded. If the performance of your application is not acceptable, do not migrate to LabVIEW NXG at this time.