The question describes the standard external procurement cycle within the SAP Project System, starting after the sourcing phase (quotation entry). The correct and logical sequence of business transactions is as follows:

1. Vendor Selection: Based on the received quotations, a vendor is chosen.

2. Purchase Order Handling: A purchase order (PO) is created and sent to the selected vendor.

3. Purchase Order Monitoring: The project team and purchasing department track the PO status until the goods are delivered.

4. Goods Receipt (GR): The materials are received, and a goods receipt is posted against the purchase order, which updates project stock and costs.

5. Invoice Receipt (IR): The vendor's invoice is received and posted, triggering the verification process against the PO and GR before payment.

This sequence represents the core "Procure-to-Pay" business process as integrated with SAP Project System.

A: This sequence is illogical. Vendor selection and purchase order creation must occur before goods receipt and invoicing. Placing "Benefic check" at the start is incorrect.

B: This option is incomplete as it omits the critical financial steps of Goods Receipt and Invoice Receipt, which are essential for completing the procurement cycle and settling costs.

C: This sequence incorrectly places Invoice Receipt before Goods Receipt. The standard "three-way match" best practice involves verifying the invoice against both the purchase order and the goods receipt.

1. SAP S/4HANA Documentation (SAP Help Portal): The standard process for procuring materials in the Project System follows the MM module's Procure-to-Pay cycle. The documentation outlines the sequence as Purchase Order -> Goods Receipt -> Invoice Verification.

Source: SAP Help Portal, SAP S/4HANA 2021, "Procurement in the Project System," Section: "Processing Material Procurement." This section details that after a purchase requisition is converted to a purchase order, the subsequent steps are goods receipt and then invoice receipt.

2. SAP Training Courseware TS412 (SAP S/4HANA Project Systems): The official course material for the CTS412 certification explicitly details the process flow for externally procured components assigned to network activities.

Source: SAP Learning Hub, Course TS412, Unit 5: Materials, Lesson: "Externally Processed Activities." The process flow diagrams and descriptions consistently show the sequence: Purchase Order → Goods Receipt → Invoice Receipt.

3. SAP Training Courseware TS410 (Integrated Business Processes in SAP S/4HANA): This foundational course, relevant to the CTS412 exam, covers the end-to-end Procure-to-Pay process.

Source: SAP Learning Hub, Course TS410, Unit 4: Procure to Pay Processing. The unit confirms the standard business process flow starts with a purchase order, followed by goods receipt, and then invoice receipt before payment is made.