Just want to from which API can I create a dependent task? , A, B,C,D like these are my task and D task need to be executed when A and B task fails and C task will be executed with the input results of A and B.

You can set D as having A and B as upstream tasks, along with a trigger for it to execute when A and B fail (maybe

all_failed

or

any_failed

). For C, you just write it with the results of A and B as arguments.

Thanks @Amanda Wee

I suggest showing a simplified code example here, then someone might be able to help you get it to work.

Could you show me what you tried? I can see why it would be tricky