Unable to delete node in VA topic

[Drishti]

Hello Community,

I have my custom topic created created but don't know for what reason the topic is not working as expected. So, I decided to delete some node and re-create but surprisingly I am not able to do anything(edit) to this topic.
Yes, I have checked the scope. The scope is correct.

Whenever I trying to delete any independent node, I am getting below mentioned error.
Please guide, how can I resolve this.

Thanks much in advance!

The error

 

[Ankur Bawiskar]

@Drishti 

deactivate that topic and create a new one

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Drishti]

@Ankur Bawiskar 
Actually the topics flow quite big.
That is the last option I have kept to do I am looking for any solution which can help me editing this topics flow

[Ankur Bawiskar]

@Drishti 

sorry but without knowing the complete details it would be very difficult to help

[Drishti]

Ok, So the thing is the I have created one new custom VA topics. Till few days back I was able to edit that topic but today when I am trying to edit it , I am not able to edit it also not able to delete any node.
I even tried to duplicate it and try doing changes but in the duplicated topic also , I am facing same issue.

I hope this will work.