Which document can you use as a reference while posting supplier invoices for lean services?

When posting supplier invoices forlean services, you can use the following documents as references:

Service Purchase Order (Option A):A service purchase order specifies the services to be procured, including quantities, prices, and terms. It serves as the primary reference document for lean services procurement. TheSAP Lean Services Guideconfirms that service purchase orders are used for invoice posting.

Service Entry Sheet (Option B):A service entry sheet records the confirmation of services rendered by the supplier. It is often required to validate the services before posting the supplier invoice. The sameSAP Lean Services Guidedocuments the role of service entry sheets in the invoicing process.

C. Service Type Based Pricing Condition:Pricing conditions are part of the pricing determination process and are not used as direct reference documents for posting supplier invoices.

D. Service Product Master Data:Service product master data defines the characteristics of services but is not used as a reference document for invoice posting.

SAP Lean Services Guide:Explains the use of service purchase orders and service entry sheets in lean services procurement and invoicing.https://help.sap.com

SAP Invoice Management Guide:Provides details on the documents required for posting supplier invoices.

Why the Other Options Are Incorrect:Key References: