A customer wants to define some fields as mandatory in an internal order. How can the customer achieve this?

Field selection for internal orders is controlled through the order type's configuration settings. By customizing the order type, specific fields can be set as mandatory, optional, or suppressed when new internal orders of that type are created.

Selection variants are typically used for report selection or screen layout customization for transaction processing, not for enforcing mandatory fields in master data like internal orders.

A model order serves as a reference or template for creating new internal orders, but it does not control the mandatory status of fields.

Field status variants primarily control the field status for G/L account master data and posting keys in financial accounting, affecting document entry rather than internal order master data fields.