Which of the following characteristics can be configured in the flexible workflow for purchase order approval? (Select all that apply)

The correct answer highlights that document type is a key characteristic that can be configured in the flexible workflow for purchase order approval. When setting up workflows in SAP S/4HANA, the document type plays a crucial role as it defines the type of transaction being processed and influences the workflow routing and conditions that apply.

In flexible workflows, the configuration based on document type allows organizations to establish specific approval processes that cater to the characteristics of different purchasing scenarios (such as standard purchase orders or service purchase orders). By tailoring workflows according to document types, businesses can ensure that the right authorities are involved in the approval process based on the nature of the purchase, which is crucial for maintaining compliance and efficiency.

While parameters such as currency, vendor ID, and material group might be important in the purchase order process itself, they do not directly define the workflow for approval in the same way that document type does. Therefore, they are not selectable characteristics in the configuration of a flexible workflow for purchase order approval. Instead, they may serve as criteria for decisions or filters in other processes, but are not foundational elements of the workflow configuration.