Load Redwood self-paced learning: REST API Errors

Summary:

When loading Redwood Self-Pace learning we're getting the following error we have not been able to resolve.

We'd really appreciate help on this.

Content (please ensure you mask any confidential information):

https://{{fusion}}/hcmRestApi/resources/11.13.18.05/learningSelfPacedItems

{"learningItemNumber": "ASWELI0001",
"learningItemTitle": "Elearning test 0001",
"learningItemType": "ORA_COURSE",
"learningItemStatus": "ORA_ACTIVE",
"learningItemVisibility": "PUBLIC",
"learningItemSupportedLanguages": "en",
"learningItemActiveDate": "2015-01-01T00:00:00+00:00",
"learningItemEnrollmentStartDate": "2015-01-01T00:00:00+00:00",
"content": [
               {
                   "sourceLaunchURL": "https://www.aswatson.com/"
               }]
}

ERROR MESSAGE

{
"title": "Bad Request",
   "status": "400",
   "o:errorDetails": [
       {
           "title": "Invalid/missing sourceTypeId or sourceTypeNumber"
       }
   ]
}

The payload worked OK on another customer test environment loaded several items.

Also, we've reviewed the post and documentation:

https://community.oracle.com/customerconnect/discussion/882234/bulk-creating-self-paced-learning-items