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I have a Data Action that makes an API request.  In error scenarios on the API, it returns either:
"errors" : {

  "error": {

      "key": "key 1",

      "value": "value 1"

   }     

}

But if there are 2+ errors, "error" turns into an array:
"errors": {

    "error": [

        {

            "key": "key 1",

            "value": "value 1"

        },

        {

            "key": "key 2",

            "value": "value 2"

        }

    ]

}

I have the Response Contract to accept the array.   How can I make the template such that if I have a singular error object (no Array), I can place it in the array of the contract?  And if the response is an array, it populates normally.

#DataActions

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I would start by posting a bug ticket to that endpoint for being poorly behaved!  It seems like it should always return an array, even if it is a single error.

If the response is being returned to Architect I would probably handle this special case there, as it has JSON tooling that can attempt both the single response and array response. While cleaning this up in a data action might be possible, it is going to be some pretty ugly string manipulation.