Invalid Item SubType for Creation

What does TSM_E_INVALIDITEMSUBTYPE mean?

The provided nSubType parameter for creating a child item is invalid or not compatible with the parent item's type (0x98510003). The usable subType depends on the parent tree item's category; for example, a PLC Functionblock may only be added to a PLCFOLDER item, not a DEVICE item.

• An attempt was made to create a TwinCAT item with an invalid sub-type.
• Trying to instantiate a device object with incorrect attributes.
• Incorrect configuration parameters for a specific sub-component type.

Click steps to track your progress.

1. 1

   Verify the nSubType value against the documentation for the specific parent item type where the child is being created.

2. 2

   Ensure the nSubType is appropriate for the itemType of the parent node to which the child is being added.

3. 3

   Review 'ITcSmTreeItem Item Types' (page 39) and 'ITcSmTreeItem Item Sub Types' (page 41) for valid combinations and dependencies.