What is a Stock Transfer Order (STO) and How to Configure It in SAP

Introduction: Understanding Stock Transfer Orders in SAP

A Stock Transfer Order (STO) in SAP facilitates the movement of stock between two plants, either within the same company code (intra-company) or between different company codes (inter-company). Unlike traditional transfer postings, STO enables integrated logistics processes such as delivery, billing, and goods issue/receipt tracking. STOs are crucial for maintaining accurate inventory records and enabling efficient supply chain operations. 

Step-by-Step Configuration of Stock Transfer Order Between Two Plants

To successfully configure STO in SAP, the following steps must be performed:

1. Create a Vendor for the Receiving Plant

  • Use T-Code: BP
  • Select vendor role (e.g., FLVN00 or FLVN01)
  • Assign the vendor to the company code of the receiving plant

2. Assign Supplying Plant in Vendor Master

  • In the purchasing data view:
  • Define the supplying plant
  • Assign a schema group

3. Create Customer with Vendor's Sales Area

  • Use T-Code: BP
  • Select customer role (e.g., FLCU00 or FLCU01)
  • Align the customer account with the vendor's sales area
  • This is essential for outbound delivery and billing in STOs

4. Define Route Determination Elements

  • Configure:
    • Shipping conditions
    • Delivering plant
    • Transportation zone
  • These inputs help determine the delivery route for the STO

5. Configure Pricing Procedure

  • Assign the document pricing procedure and customer pricing procedure
  • Ensures accurate pricing for invoice generation during the STO process

6. Maintain Pricing Condition Records

  • Use condition types relevant to STOs (e.g., freight, discounts)
  • Ensure proper condition records are maintained in SAP

7. Maintain Carrier in Customer Master

  • Define the carrier as a partner function in the customer master

8. Configure Supplying & Receiving Plant Assignments

  • Use T-Code: OMGN
  • Assign company code and sales area to both supplying and receiving plants

9. Assign Delivery Type and Checking Rule

  • Link the delivery type (e.g., NB) and checking rule to the STO document type

10. Map Document Type for Supplying/Receiving Plants

  • Define the purchasing document type to be used between the plants

How to Create and Process a Stock Transport Order (STO)

11. Create the Stock Transport Order

  • Use T-Code: ME21N
  • Input item category and plant details
  • Save the STO

12. Release the STO (If Applicable)

  • Use T-Code: ME28
  • Approve the STO via release strategy, if configured

13. Create Delivery Document

  • Use T-Code: VL10G
  • Create delivery document in the background
  • Successful delivery generation indicates correct configuration

Inter-Company Stock Transfer in SAP

When stock transfer occurs between plants in different company codes, it's termed inter-company STO. Here’s how to configure it:

1. Material Master Data

  • Maintain the material in both supplying and receiving plants using T-Code: MM01

2. Stock Management

  • Stock should exist only in the supplying plant, entered using MB1C

3. Customer Master for Receiving Plant

  • Create the receiving plant as a customer in the supplying company’s sales area using BP with customer role

4. Assignments in OMGN

  • Assign:
  • Customer number in the receiving plant details
  • Supplying plant’s sales area in the supplying plant details

5. Define Delivery Type for Plant Combinations

  • Use delivery type NB for the STO between different company codes

Execution of Inter-Company STO: T-Codes & Process

Creating STO

  • Use T-Code: ME21N
  • Verify the shipping tab is populated based on the customer master setup

Delivery Creation

  • Use T-Code: VL10B
  • Enter the shipping point
  • Execute to generate outbound delivery

Goods Issue

  • Use T-Code: VL02N
  • Enter delivery document number
  • Perform picking and Post Goods Issue (PGI)

Goods Receipt

  • Use T-Code: MIGO
  • Enter the PO number
  • Confirm stock has been updated in the stock overview
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