i am trying to get response from a public api using the external api activity but it is giving error saying json format not acceptable.
Also in the url it is saying this is not a valid integer. Please suggest what can be the issue?
Unfortunately the format supported is rather limited (see docu below).
Anything not following this standard can't be parsed. (Mainly then nothing can be parsed)
So basically you nearly always needs something intermediary translating the data from the public service to ACS JSON format.