Hi Mehvish,
Greetings from Syncfusion support.
We have checked your requirement with DropdownTree component. Currently we don’t have support to prevent selection of parent node in Dropdown Tree. We have already considered this as a feature from our end and this will be included in any of our upcoming releases. Generally, we will plan any feature implementation based on customer request count, feature rank and Wishlist plan.
You can track the feature status through the below link,
Please let us know, if you need any further assistance.
Regards,
Sowmiya.P