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A business practitioner is creating three different activities: 1) Targeting a recipient with a specific email domain 2) Targeting recipients that are over 30 years old 3) Targeting deliveries with a delivery status equal to failed The business practitioner attempts to combine the three results using the "Union" activity, and they receive the following error: "The document types of inbound events are incompatible (step 'Union'). Unable to perform the operation." What is the cause for the error in the union activity?
Correct Answer: D
The error in the Union activity is caused by D. Inbound transitions containing populations with heterogeneous targeting dimensions1. The Union activity is used to combine two or more populations. The inbound transitions must contain populations with the same targeting dimensions. In this case, the three different activities have different targeting dimensions, which are email domain, age, and delivery status. Therefore, the Union activity cannot combine the three results together2. https://experienceleague.adobe.com/docs/campaign-classic/using/automating-with-workflows/targeting-activities The error in the 'Union' activity is caused by the attempt to combine results from activities with different targeting dimensions. The Union activity requires that all incoming transitions (the populations to be combined) have the same schema structure. In this case, targeting recipients based on email domain and age involves recipient attributes, which are usually part of the same recipient schema. However, targeting based on delivery status involves attributes from the delivery schema. Since these schemas have different structures and fields, the Union activity cannot combine them directly without configuration that reconciles these differences.References:The answer is based on the principles of database schema structures and the functionality of union operations within data processing workflows, as typically encountered in campaign management systems like Adobe Campaign Classic.
