Problem adding a field value to custom activity

[Anonymous]

Hello,

I am confronting with a problem when trying to add a field value to a custom activity using REST API. I've created the field, I've saved the custom activity. When I try to add the activity without that field, it all works well (i.e. the custom activity is saved in marketo, and can be seen there). But if I try to add the field "productTest", the returned message is: "'Invalid attribute 'productTest''".

This is the payload (hope I'm using the right term):

{
     "input": [
          {
               "leadId": 32763,
               "activityTypeId": 100001,
               "primaryAttributeValue": "description of what is going on",
               "activityDate": "2018-05-22T08:37:36+00:00",
               "attributes": [
                    {
                         "name": "productTest",
                         "value": "test a new field"
                    }
               ]
          }
     ]
}

This is how the fields look like inside the marketo admin:

And this is how the custom activity looks like:

What am I doing wrong?

Thank you.

[SanfordWhiteman · Accepted solution]

Please show the JSON response to a Describe Custom Activity request. And use the Advanced Editor's syntax highlighter when posting code.

[Anonymous]

Thank you very much. Looking at the Describe custom activity illuminated me. I was wrongly using the "apiName" as "name" (although, to be honest, is more intuitive to use the apiName in the api).

[49] => stdClass Object
     (
          [id] => 100001
          [name] => Testing Marketo
          [apiName] => testingMarketo_c
          [description] => This is a custom activities test
          [primaryAttribute] => stdClass Object
               (
                    [name] => The test
                    [apiName] => theTest
                    [dataType] => string
               )
          [attributes] => Array
               (
                    [0] => stdClass Object
                         (
                              [name] => Product Test
                              [apiName] => productTest
                              [dataType] => string
                         )
                    [1] => stdClass Object
                         (
                              [name] => Profile-Deleted-468
                              [apiName] => profile-Deleted-468
                              [dataType] => string
                         )
               )
     )

[SanfordWhiteman]

Agreed, that's strange nomenclature.