# AJAX PUT invalid request

**URL:** <https://forums.knack.com/t/ajax-put-invalid-request/17796>\
**Category:** API & Custom Code\
**Created:** [August 28, 2024, 8:12pm UTC](https://forums.knack.com/t/ajax-put-invalid-request/17796 "2024-08-28T20:12:12Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![LukeAHoughton](https://sea2.discourse-cdn.com/flex020/user_avatar/forums.knack.com/lukeahoughton/32/5617_2.png) [@LukeAHoughton](https://forums.knack.com/u/LukeAHoughton)\
**Post date:** [August 28, 2024, 8:12pm UTC](https://forums.knack.com/t/ajax-put-invalid-request/17796/1 "2024-08-28T20:12:13Z")

</div>

I am having some trouble with utilising AJAX to update a field within a record.

It seems that it mostly works but then cannot complete the action of updating the field with the sample data.

I get the console logs:  
PUT [https://api.knack.com/v1/pages/scene\_XXX/views/view\_YYY/records/YYY](https://api.knack.com/v1/pages/scene_XXX/views/view_YYY/records/YYY) 400 (Bad Request)  
Uncaught Error.  
{“errors”:[{“message”:“Invalid request”}]}

```auto

function updateFieldWithHello(recordId) {
  $.ajax({
    url: "https://api.knack.com/v1/pages/scene_XXX/views/view_YYY/records/" + recordId, // Scene/View of the form
    type: "PUT", 
    headers: {
      "X-Knack-Application-Id": Knack.application_id,
      "X-Knack-REST-API-Key": "knack",
      "Authorization": Knack.getUserToken(),
      "Content-Type": "application/json"
    },
    data: JSON.stringify({
      field_XXX: "hello" 
    }),
    success: function(response) {
      console.log('Record Updated');
    },
    error: function(jqXHR, exception) {
      var msg = '';
      if (jqXHR.status === 0) {
        msg = 'Not connected.\n Verify Network.';
      } else if (jqXHR.status == 404) {
        msg = 'Requested page not found. [404]';
      } else if (jqXHR.status == 500) {
        msg = 'Internal Server Error [500].';
      } else if (exception === 'parsererror') {
        msg = 'Requested JSON parse failed.';
      } else if (exception === 'timeout') {
        msg = 'Time out error.';
      } else if (exception === 'abort') {
        msg = 'Ajax request aborted.';
      } else {
        msg = 'Uncaught Error.\n' + jqXHR.responseText;
      }
      console.log(msg);
    }
  });
}

// Listen for form submission to update the record with "hello"
$(document).on('knack-form-submit.view_XXX', function(event, view, record) {
  const recordId = record.id;
  updateFieldWithHello(recordId);
});

```

---

<div class="post-metadata">

**Author:** ![Kelson](https://sea2.discourse-cdn.com/flex020/user_avatar/forums.knack.com/kelson/32/762_2.png) [@Kelson](https://forums.knack.com/u/Kelson)\
**Post date:** [September 3, 2024, 8:20pm UTC](https://forums.knack.com/t/ajax-put-invalid-request/17796/2 "2024-09-03T20:20:05Z")

</div>

Hey Luke,

I’ve reviewed your code and everything _looks_ like it should work as expected.

That being said, here are a few places I’d start when debugging this:

1. In your form submit event handler, you’re triggering the AJAX request on `kn-form-submit`. If the form this code runs on is an “add” or “create” type of form, the record itself may not yet exist when the AJAX runs. This is because `kn-form-submit` doesn’t wait for the record to be successfully created (or updated in the case of an “edit” form) before running the handler. You may want to try using `kn-record-create` ([docs](https://docs.knack.com/docs/record-create)) here instead, again assuming the form is creating a new record. This will tell Knack to wait for the record to actually exist before running your AJAX request.
2. Another place you may check is _where_ your AJAX request is being sent to. It’s not clear to me in your code if that request is being sent to the same form or a different one than your even handler is running on. Since you’re attempting a PUT request, you’ll need to make sure you’re sending that request to an “edit” type of form in Knack.

I hope these ideas help you get this working but if you have any questions, feel free to reach me at [kelson@ksensetech.com](mailto:kelson@ksensetech.com).