The API documentation clearly states that "to" is an array. Sorry.

 

According to the documentation for this endpoint, "from" and "to" parameters are the member_id.

I can view the member IDs from the URL and know they are correct:
/admin/?app=core&module=members&controller=members&do=view&id=1196

Despite this, I am getting invalid_recipient. The API key I am using does have permissions, the member IDs exist, and I have also tried using display names and emails.

from:1196
to:1195
title:test
body:test test

{

    "errorCode": "1C374/3",

    "errorMessage": "INVALID_RECIPIENT"

}

 

Please close this I am an idiot and am not passing an array.

 

to is required to be an array, not integer so would need to change that in your setup.

Just now, Jim M said:

to is required to be an array, not integer so would need to change that in your setup.

{
  "from": 39,
  "to": [
    1196
  ],
  "title": "TestTitle",
  "body": "TestBody"
}

Now I am getting invalid sender 😕

{
    "errorCode": "1C374\/2",
    "errorMessage": "INVALID_SENDER"
}

User ID 39 have the ability to send messages?

8 minutes ago, Jim M said:

User ID 39 have the ability to send messages?

Yes, I have also tried with user 1 (the global admin account). The accounts are activated and I tried sending messages through the UI.

Please be advised I have marked this to a developer to review this. Someone will be with you as soon as they can.

52 minutes ago, Jim M said:

Please be advised I have marked this to a developer to review this. Someone will be with you as soon as they can.

OK, how will I be contacted?

Also, is this a confirmed bug with IPS?

You will be contacted here.

No, it is not a confirmed bug. Our developers will look at what you have provided here and confirm next steps.

Sorry for the delay! Can you share more about how are you are sending the request?

Your post suggests that you're sending JSON to the API, whereas you need to send the values as POST parameters.