Deep Dive into Service Materials in SAP ERP (Material Type DIEN)
Overview and Purpose
Material Type DIEN is primarily used for both procurement of services (MM) and sales of services (SD).
Facilitates intangible (non-stock) services management in a manner similar to physical materials but without tracking inventory.
After SAP MM 4.0, organizations can opt to use the External Service Master rather than DIEN for procuring services.
Key Functional Highlights
Integration Between MM and SD
A single DIEN record can support both service purchasing (MM) and service sales (SD), enabling smoother integration and consistent master data.
Suitable for scenarios where a service requires billing without a tangible goods movement.
Business Considerations
Decide whether to manage services through the Material Master (DIEN) or the External Service Master, depending on complexity, compliance, and reporting needs.
Understand how it affects pricing, valuation, and contract management throughout the service lifecycle.
Prerequisites for Implementation
Correct configuration of material type DIEN in transaction OMS2 (generally set as a non-stocked material with no quantity/value updates).
End-users must be trained on service-specific master data maintenance to avoid confusion with physical goods materials.
Technical Highlights for SAP Consultants
Configuration (OMS2)
In standard SAP, DIEN is often preconfigured as non-stock, with no goods receipt or inventory valuation.
Verify or adjust attributes in transaction OMS2 to ensure they align with the organization’s service procurement and sales processes.
Views and Screens in the Material Master
Basic Data: Ensure correct base unit of measure (e.g., EA, HRS) and descriptions.
Purchasing View: Needed if DIEN is used for external service procurement (e.g., item category ‘D’ for service POs).
Sales Views: Essential for setting up service pricing, taxes, and billing in SD.
MRP Views: Typically not relevant for services, as no stock or MRP processes apply.
Service Procurement Scenarios
When raising a Purchase Order with DIEN, you usually create a service entry sheet instead of a goods receipt.
If using External Service Management (including Service Master Records), ensure correct setup to avoid duplication or confusion with DIEN materials.
Accounting and Valuation
DIEN materials are generally non-valuated in the inventory sense.
Instead, costs are captured via account assignment (e.g., cost centers, projects, or orders), and revenues flow into CO for analysis.
Post-S/4HANA Considerations
In SAP S/4HANA, organizations may use the Limit Items approach or the Service Master for service procurement, reducing reliance on DIEN.
Evaluate whether to continue with DIEN or transition to newer procurement objects based on the S/4HANA roadmap.
Key Takeaways for End-Users
No Physical Stock
DIEN materials do not track quantity in inventory or require a traditional goods receipt.
Basic Master Data Maintenance
Maintain clear service descriptions and ensure the unit of measure is correct (e.g., hours, jobs) to facilitate accurate ordering and billing.
Purchasing & Sales Transactions
Purchasing: A service entry sheet is used to confirm delivered services, replacing a physical goods receipt.
Sales: When selling services, orders can be billed without a delivery process since there’s no physical shipment.
Accounting Implications
No inventory valuation applies to DIEN; costs or revenues are recorded at the time of service entry or billing.
Reporting
DIEN-related transactions appear in purchasing and sales reports but not in inventory stock reports. Use the correct reporting tools and parameters for services.