Problem adding a field value to custom activity
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.
