Issue
The multiTaskGanttDataV2 function from the SNC.PlannedTaskAPI is not working in one instance, but is functioning in another instance.
Cause
Using server side api functions is not supported as the functions are not documented.
Resolution
Using the core platform API is not supported as the API is not documented. The SNC.PlannedTaskAPI runs at the server level and it is not recommended to use the API or its functions.