How to fix Validation error of type SubSelectionNotAllowed

Question

I'm getting the following error when calling a lambda function through AppSync GraphQL:

{
  "data": null,
  "errors": [
    {
      "path": null,
      "locations": [{ "line": 2, "column": 3, "sourceName": null }],
      "message": "Validation error of type SubSelectionNotAllowed: Sub selection not allowed on leaf type String of field sendSignatureRequest @ 'sendSignatureRequest'"
    }
  ]
}

I haven't seen this error before. Where should I be looking to fix it?

score 2 · Answer 1 · answered Apr 17 '19 at 14:29

2

Figured it out. The lambda function returns a string and I coded an object in the query.

answered Apr 17 '19 at 14:29

Kay

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Could you elaborate on what you mean by this? – ShokoN Jul 10 '21 at 02:11
the return type of the function has to match the return expected by appsync. – Kay Jul 12 '21 at 15:23

How to fix Validation error of type SubSelectionNotAllowed

1 Answers1