Non-stock materials are materials that are not kept in stock, but are procured externally as required1. They can be maintained in the material master as service products (product type SERV). You can add non-stock materials to an operation or suboperation as a component. The system creates a purchase requisition and a purchase order in the same way as for non-stock materials that you procure externally1.

Among the given options, the following are possible for non-stock materials in a released maintenance order:

• A purchase requisition can be created automatically as soon as the order is saved. This is the default behavior for non-stock materials, unless you change the configuration settings2.
• The maintenance order can be set to TECO (technically completed) before the invoice is created. This is possible if you use the compatibility mode for external procurement, which allows you to technically complete the order even if there are open purchase requisitions or purchase orders2.
• A goods receipt can be posted after the maintenance order is technically completed. This is possible if you use the enhanced mode for external procurement, which allows you to post goods receipts for non-stock materials after the order is technically completed2.

The following options are not possible for non-stock materials in a released maintenance order:

• A purchase order is created automatically as soon as the order is saved. This is not possible, as the purchase order requires manual processing and approval after the purchase requisition is created2.
• A purchase requisition will ALWAYS be created as soon as the order is saved. This is not always true, as you can change the configuration settings to create the purchase requisition manually or at a later point in time2.

Therefore, the correct answers are A, B, and C. References: 1: What’s New in SAP S/4HANA 2021 - SAP Online Help 2: How to Configure SAP S/4HANA Asset Maintenance Subcontracting - SAP PRESS

• A maintenance order with status REL means that the order is released and ready for execution. At this stage, the following characteristics apply: