[Cause]
During bin picking, the workpiece data popped by IMPOP.PC or specified by an argument is not in the workpiece list. If no workpiece data ID is specified, IMPOP.PC has not popped any workpiece data, or the latest workpiece data popped by IMPOP.PC has been deleted. If a workpiece data ID is specified, that workpiece data ID is incorrect, or the workpiece data with the specified ID has been deleted.
[Countermeasure]
Confirms the logic of the TP procedure and amends it.