Which of the following is a common use of a Decision Shape?

A Decision Shape in Boomi is primarily used to evaluate conditions and determine the flow of the process based on the results of those evaluations. One of its common uses is to check the existence of a record in the destination system. This involves making a decision based on whether the record already exists, subsequently influencing the next steps in the integration process. For instance, if a record is found, the process may proceed with an update, while if it is not found, it might create a new record.

The other options, while relevant to various integration tasks, do not encapsulate the main purpose of the Decision Shape. Transforming data formats is better suited for a Data Process or Transformation Shape, aggregating multiple data sources typically involves a combination of shapes to handle data merging or joining, and validating document structures usually utilizes a validation shape or processes designed specifically for schema validation. Thus, the inherent functionality of the Decision Shape is most aligned with making logical decisions based on data existence checks.