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Using AWS Lex and Lambda, I am trying to build a lambda function which, first validates the invoked intent and, then moves forward with the questions (to assign values to slots).

Towards the end of fulfimentCodeHook, an error occurs, "Reached second execution of fulfillment lambda on the same utterance"

sid8491
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Gurpreet Bajwa
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  • I am also getting the same error – user2966197 Jun 08 '17 at 19:48
  • Are you trying to validate an intent on its invocation? – Gurpreet Bajwa Jun 08 '17 at 20:50
  • I have created two intents(with different utterances) within the same bot. In my lambda code I check the incoming intent_name and based on that I call different functions. I do not get error when I test the lambda function from lambda function console but when I execute this from Lex console I get the above error. I also tried to create two separate lambda functions based on two intents(within same bot) but still I get same error – user2966197 Jun 08 '17 at 22:21
  • Ok. Are you using dialogAction's type as 'confirmIntent' anywhere? – Gurpreet Bajwa Jun 08 '17 at 23:00
  • I have in my python code a function where I have `ConfirmIntent` as `dialogAction's type` but I am not calling this function from anywhere in my code so its just sitting redundantly – user2966197 Jun 08 '17 at 23:08
  • For me, that was causing a problem as I was using it on intent's invocation. Not sure why you are facing this issue. – Gurpreet Bajwa Jun 09 '17 at 01:28
  • how did you resolved it? Did you just removed it? In my case I am guessing `Delegate` type in the DialogAction might be causing issue. Do you also have 2 or more intents in the same bot? When i have only 1 intent in the bot it executes fine but when I add another intent this error comes – user2966197 Jun 09 '17 at 02:33
  • I was getting this too. For me, I was defaulting an empty string into slots. The docs specify you must default null if the slot value is unknown (https://docs.aws.amazon.com/lex/latest/dg/lambda-input-response-format.html). When I did this, it worked. – Steve D. Jan 18 '18 at 15:11

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