Hi @pavani_paluri I am unable to open the execution details and I see the 'could not deserialize' error when I try to open. 

IN the outbound http logs the POST is showing a 400 error code occured.

I have tried removing the data pill and hardcoding the value but the same issue occurs. In the flow enginge context logs the error logs are showing:
"error: PTask Number: PTask Number is required. (Process Automation.5e66797e9f9c02105760e6073b0a1c1c; line 3):"