I resolved these errors with help from Esri staff. I've copied the steps below in case someone else runs into the same issue in the future.
*Note: site must be PUBLICLY accessible to view custom config results in data.json
Step by Step Instructions
https://hub.arcgis.com/admin/sites
Click on YourSite > Groups Manager button
Example: https://hub.arcgis.com/admin/sites/56b71074912341538ae57f26e82bec2f/groups
Click the DCAT Feed button
Copy paste this code with YOUR bureau and program codes (highlighted below) anywhere after a comma and before the last bracket.
If just one bureau and program code:
"bureauCode": [
"010:86"
],
"programCode": [
"015:001"
],
If more than one
"bureauCode": [
"010:86",
"010:04"
],
"programCode": [
"015:001",
"015:002"
],
Example:
{
"title": "{{default.name}}",
"description": "{{default.description}}",
"keyword": "{{item.tags}}",
"issued": "{{item.created:toISO}}",
"modified": "{{item.modified:toISO}}",
"publisher": {
"source": "{{default.source.source}}"
},
"bureauCode": [
"010:86"
],
"programCode": [
"015:001"
],
"contactPoint": {
"fn": "{{item.owner}}",
"hasEmail": "{{org.portalProperties.links.contactUs.url}}"
}
}