Complete Warehouse Inbound Process in SAP
A Beginner-Friendly Guide with T-Codes & Practical Explanation
What is Inbound in a Warehouse?
Inbound process means receiving goods from a supplier into the warehouse. This includes verifying quantity, checking batch details, posting GRN in SAP, and making stock available for outbound.
Step-by-Step Inbound Process in SAP
1️⃣ Check Purchase Order – T-Code: ME23N
Purpose: To view the Purchase Order details.
When to Use: When a truck arrives at the warehouse.
What to Check:
- Material Code
- Ordered Quantity
- Vendor Name
- Delivery Date
2️⃣ Post Goods Receipt – T-Code: MIGO
Purpose: To post GRN (Goods Receipt Note) in SAP.
When to Use: After physical verification of goods.
What You Enter:
- Purchase Order Number
- Received Quantity
- Batch Number
- Manufacturing Date
- Expiry Date
Once saved, stock is updated in SAP.
3️⃣ Check Stock – T-Code: MB52
Purpose: To check batch-wise stock.
When to Use: After posting GRN to confirm stock update.
4️⃣ Display Material Document – T-Code: MB03
Purpose: To view GRN document details.
When to Use: If manager asks for GRN proof.
5️⃣ Batch Information – T-Code: MSC3N
Purpose: To check batch details.
When to Use: When verifying expiry or batch history.
Understanding FIFO in Inbound
Inbound process directly affects FIFO. Correct batch and MFG date entry ensures proper outbound dispatch later.
What a Warehouse Manager May Ask You
📊 1. “Show me today’s GRN report.”
Use MB51 to extract material document list by date.
📦 2. “Show batch-wise stock report.”
Use MB52 and filter by material.
📄 3. “Give me GRN copy for this PO.”
Use MB03 with material document number.
📈 4. “How much stock came this month?”
Use MB51 with date range filter.
Common Mistakes in Inbound
- Entering wrong batch number
- Wrong quantity posting
- Posting GRN without physical verification
- Not checking expiry date
- Duplicate GRN posting
Inbound Process Flow Summary
PO Check (ME23N) → Physical Verification → GRN Posting (MIGO) → Stock Check (MB52) → Batch Verification (MSC3N)
Final Advice for Freshers
As a warehouse data entry operator, accuracy is your strength. Inbound process controls stock, audit compliance, and future outbound operations. If you understand these T-Codes clearly, you can confidently handle warehouse operations in SAP.

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