You have wired a cluster to a Bundle By Name or Unbundle By Name function. However, none of the cluster items are labeled. Because of this, LabVIEW does not know which item you want to access with this function.

To correct this error, replace the Bundle By Name or Unbundle By Name function with the Bundle or Unbundle function, or add a label by right-clicking the item and selecting Visible Items»Label from the shortcut menu. A blank label appears, ready to accept input.

Tip   You should try to always use unique names for cluster elements. A cluster may have elements with identical names, but this may make the diagram difficult to read. A cluster may also have some of its elements unnamed, but these elements will never be accessible with the Bundle By Name or Unbundle By Name function.