The condition Tagbox Item Assigned checks if a specific tagbox item ("a tag") is assigned in a specific field e.g. Check if the tag "Twitter" is assigned in the field "SocialMediaPlatforms" on Layer "CopyrightUsages" to then use this image on Twitter. The Business Rule checks if the provided Tagbox Item was assigned to any Content Item and triggers this very moment e.g. Check if the tag "Dealer Portal Europe" is assigned to then apply e.g. the view permission for European dealers. 

Triggers when a tagbox item is found in the provided Tagbox, either any value (leave refId empty) or a specific value (provide refId). 

The Condition “Tagbox Item Assigned” is true, when the Item is assigned and when it stays assigned. If you want the business rule to trigger only when the item is assigned, then you must combine “Field Value Change” and “Tagbox Item Assigned”.

Use Tagbox Item Assigned inside AND/OR to check if multiple tags are assigned.

{
   "kind": "AndCondition",
   "conditions": [
        {
        "kind": "TagboxItemAssignedCondition",
        "refId": "123556..."
        },
        {
        "kind": "TagboxItemAssignedCondition",
        "refId": "123556..."
        }
    ]
}

Specific Definitions

 The refId is used in the Business Rule, so you can update the list item attributes at any time. 

Is Product 12346xxx Assigned?

{
    "kind": "TagboxItemAssignedCondition",
    "fieldpath":"productInformation.products",    
    "refId": "12346xxxx"
}