Introduction
SAP MM (Material Management) is a critical module in SAP ERP that manages procurement and inventory management processes. Organizations often encounter various SAP MM issues requiring troubleshooting through support tickets. This guide provides expert solutions to common SAP MM support ticket questions to help resolve workflow errors, purchase order issues, inventory management problems, and more.Common SAP MM Support Ticket Questions and Answers
1. Workflow Setup Issues in SAP MM
Problem: An error appears:"Work item 60772: Linkage to object BUS2009 event REJECTED cannot be written."
Solution:
- Use transaction SWE2.
- Ensure that the object BUS2009 event REJECTED is enabled.
2. Preventing Duplicate Purchase Orders and Transactions
Problem: Users can create two purchase orders (POs) for the same purchase requisition, leading to duplicate goods receipts (GR) and invoice receipts (IR).Solution:
For PO Prevention:
- Define buyer functional authorizations in OMET.
- Assign the functional authorization to a user using parameter ID EFB in transaction SU52.
- Change the warning message to an error in customizing under Inventory Management or Invoice Verification.
- Enable the duplicate invoice check in the Vendor Master Data.
3. Viewing Scrapped Quantity for Movement Type 551
Problem: Need a report to track scrapped material issued using movement type 551.Solution:
- Create a separate material ID for scrap and receive it as a byproduct.
- Movement type 551 writes off materials from inventory. To track scrapped items, maintain them under a dedicated material code.
4. Multi-Plant Planning for MRP in SAP MM
Problem: Planning for Plants A and B is not reflected in Plant C, even when using Special Procurement Key 40.Solution:
- Special procurement key 40 does not include a supplying plant.
- Create a new procurement key and assign the supplying plant.
- Use this key in the Material Master to consolidate all plant requirements at Plant C.
5. Identifying User Exits Before Saving a Document in Goods Receipt (GR)
Problem: Find a user exit triggered before saving a goods receipt with a purchase order.Solution:
- Use transaction SMOD to find available user exits.
- MB_CF001 could be a relevant user exit in this scenario.
6. Understanding Pricing Schema and Condition Subtotals in SAP MM
Problem: What is the function of condition sub-total fields in the MM pricing schema?Solution:
Examples of subtotal field uses:
- 1 → Transfers value to KOMP-KZWI1.
- 7 → Used for rebate calculations.
- S → Determines the final net inclusive of cash discounts and rebates.
7. Incorrect Purchase Order (PO) Information Despite Correct User Info (USR03)
Problem: The telephone number printed on the purchase order (PO) is incorrect despite being accurate in USR03.Solution:
- Check Purchase Group Information stored in Table T024.
8. Essential SAP MM Tables for Queries
Commonly Used Tables in SAP MM:| Category | Table | Description |
|---|---|---|
| Purchasing | CEBAN | Purchase requisition data |
| EKPO | Purchase order details | |
| Material Master | MAKT | Material descriptions |
| MARA | Material master | |
| MRP | MDKP | MRP Header |
| MDTB | MRP Table |
9. Transaction Codes for Inventory Management (IM) & Purchase Orders (PO)
- Inventory Management (IM): Transaction codes begin with MBxx MIxx.
- Purchase Orders (PO): Transaction codes begin with MExx.
- Use System → Service → Status to check transaction codes.
10. Changing GL Accounts for Cost Centers in Goods Issue
Problem:
Automatic account assignment does not change based on the cost center requesting the material.Solution:
Use transaction OKB9 to define cost center-specific GL accounts.Options to override automatic account assignment:
- Define a new valuation class for exception materials.
- Allow manual GL account entry in inventory settings.
- Create a custom movement type (e.g., copy 201 to 901) and assign a transaction key.
11. Changing the Default Document Type for MRP Requisitions
Problem:
SAP always creates requisitions with document type NB.Solution:
Use transaction OMH5 to define a new document type for requisitions.12. Fixing Workflow Errors in Purchase Requisition Approval
Problem:
Error message: "Work item XXXXXX: Linkage to object BUS2009 event REJECTED cannot be written."Solution:
- Update the number range for events object SWE_EVTID using transaction SNRO.
- In SWE2, check the GLOBAL field and enable it.
- If SWLE is not defined, apply OSS Note 43986.
13. Setting a Default Tax Code in Purchase Orders
Solution 1:
Use condition type NAVS with access sequence 0003 to default the tax code.Solution 2:
- Go to IMG → Materials Management → Purchasing → Purchase Order → Define screen layout at document level.
- Ensure ME21N has the correct tax code setting.
- Configure Purchasing Info Record (ME12) to default the tax code.
14. Decimal Place Issues in SAP MM Reports
Problem:
Despite configuring EA (each) as 0 decimal places, transaction ME2L shows three decimal places.Solution:
- The MENGE (quantity) field might be set incorrectly.
- Check and correct Table EKPO settings.
15. Custom Movement Type Not Allowed for Customer Goods Movement
Problem:
Error message: "Movement type ZZZ is not allowed for customer goods movement."Solution:
Use OMJJ to check Allowed Transactions for customizing movement types.Conclusion
SAP MM users often face workflow errors, procurement issues, and inventory discrepancies. Understanding common SAP MM support ticket questions and their solutions ensures smooth operations and effective troubleshooting. With this guide, you can efficiently resolve SAP MM challenges and optimize your procurement processes.