MM Issues 

Purchasing Issues

1. ME062 - Vendor Not Created for Purchase Organization

Issue: Error when creating PO - vendor not assigned to purchasing organization[1]

Troubleshooting Steps:

1. Go to XK01/MK01 (Vendor Creation/Extension)
2. Select the vendor and extend to required purchasing organization
3. Maintain purchasing data view with payment terms, currency
4. Save and test PO creation in ME21N

2. ME005 - Account Assignment Missing

Issue: Purchase order creation fails due to missing account assignment[1]

Troubleshooting Steps:

1. Open ME21N for PO creation/modification
2. Go to Account Assignment tab for the line item
3. Assign cost center, order, or asset number
4. For service POs, ensure service specifications are maintained
5. Save the document

3. ME045 - PO Already Processed

Issue: Cannot modify PO after goods receipt or invoice posting[1]

Troubleshooting Steps:

1. Check PO history in ME23N to identify posted documents
2. If goods receipt exists, reverse using MIGO (cancellation)
3. If invoice posted, reverse using MR8M
4. After reversal, modify PO in ME22N
5. Re-process GR and invoice if needed

4. ME051 - Source List Requirement Error

Issue: No valid source list entry found during PO creation[1]

Troubleshooting Steps:

1. Check material master in MM02 - Purchasing view
2. Verify if source list requirement is activated
3. Create/maintain source list in ME01
4. Ensure validity dates cover the requirement period
5. Set appropriate source list record as preferred

5. ME083 - Purchase Order Already Exists

Issue: Duplicate PO creation attempt[2]

Troubleshooting Steps:

1. Use ME2N to search for existing POs
2. Check if PO was created with same vendor-material combination
3. Modify existing PO in ME22N if changes needed
4. If legitimate duplicate needed, change PO type or add distinguishing characteristics

Inventory Management Issues

6. M7022 - Deficit of Stock

Issue: Insufficient stock for goods issue despite showing available inventory[1]

Troubleshooting Steps:

1. Check actual stock in MB52/MMBE
2. Verify stock type - ensure it's unrestricted stock
3. Check for stock in quality inspection - release using QA32
4. Verify correct storage location and batch selection
5. If needed, perform stock transfer using MIGO (movement types 311/313/315)

7. M8186 - Movement Type Not Allowed

Issue: System prevents certain movement types[1]

Troubleshooting Steps:

1. Access SPRO → MM → Inventory Management → Goods Movement
2. Check table T156SY for movement type configuration
3. Verify movement type is allowed for the material type
4. Check authorization objects for the movement type
5. Configure or request authorization as needed

8. Plant Missing in Stock Determination

Issue: Stock determination fails due to missing plant assignment[3]

Troubleshooting Steps:

1. Open MM02 for material master maintenance
2. Check organizational levels and plant assignment
3. Verify plant is linked to inventory management settings
4. Re-run stock evaluation after correction
5. Test stock determination functionality

9. Duplicate Physical Inventory Count Document

Issue: Multiple inventory documents causing reconciliation issues[3]

Troubleshooting Steps:

1. Use MI02 to display physical inventory documents
2. Identify duplicate documents and their creation source
3. Cancel incorrect document using MI12
4. Ensure proper authorization controls in MI01
5. Implement validation rules to prevent duplicates

10. Inventory Valuation Discrepancies

Issue: Material valuation errors affecting financial reporting[4]

Troubleshooting Steps:

1. Review material master MM02 - Accounting view
2. Check valuation class, valuation area, and price control
3. Verify pricing conditions in condition records
4. Run MR21 for price change documents
5. Reconcile with finance team using MB5B report

Invoice Verification Issues

11. Price Variance in MIRO

Issue: Invoice blocked due to price differences between PO and invoice[5]

Troubleshooting Steps:

1. Check tolerance limits in OBA3
2. Review PO conditions in ME23N
3. Verify invoice details in MIRO
4. If legitimate variance, get approval for posting
5. Update tolerance limits if required by business

12. Tax Code Issues in MIRO

Issue: Tax calculations incorrect or missing during invoice posting[6]

Troubleshooting Steps:

1. Check vendor master tax settings in XK02
2. Verify tax code configuration in OB40
3. Ensure tax calculation procedure in OBCL
4. Validate tax codes for material/vendor combination
5. Post invoice with correct tax code

13. ME015 - No Suitable Item Found for Purchase Order

Issue: Invoice verification cannot find matching PO items[6]

Troubleshooting Steps:

1. Verify PO number and item details in ME23N
2. Check if PO items are still open for invoicing
3. Ensure material/service codes match exactly
4. Verify quantity and pricing on PO line items
5. Use MIR4 for invoice parking if immediate resolution not possible

14. TDS Amount Not Captured at MIRO

Issue: Tax Deducted at Source not calculated during invoice verification[6]

Troubleshooting Steps:

1. Check TDS configuration in OBCL
2. Verify vendor master TDS settings in XK02
3. Ensure withholding tax codes are maintained
4. Check TDS percentage rates in condition records
5. Update invoice with correct withholding tax details

15. Service Tax Mismatch Between PO and Invoice

Issue: Service tax rates differ between purchase order and vendor bill[7]

Troubleshooting Steps:

1. Compare tax rates in ME23N (PO) vs actual invoice
2. Check if tax law changes occurred between PO and invoice dates
3. Create credit/debit memo in MIR7 for difference
4. Update tax master data if rates have changed
5. Process corrected invoice in MIRO

Material Master Data Issues

16. M8147 - Valuation Area Missing

Issue: Material cannot be valuated due to missing valuation area[1]

Troubleshooting Steps:

1. Check valuation area settings in OMJ7
2. Assign plant to appropriate valuation area
3. Update material master MM02 with valuation data
4. Configure automatic account determination
5. Test material transactions post-correction

17. Material Type Not Allowed Error

Issue: Cannot create material with specific material type[5]

Troubleshooting Steps:

1. Access SPRO → MM → Material Master → Material Types
2. Check material type configuration in OMS2
3. Verify field selection and number range assignment
4. Ensure user authorization for material type
5. Request authorization or use appropriate material type

18. Material Classification Issues

Issue: Incorrect or missing material classification affecting procurement[8]

Troubleshooting Steps:

1. Use CL02 to maintain classification
2. Check class assignment in material master MM02
3. Verify characteristic values are correctly maintained
4. Ensure classification view is active in material type
5. Update search helps and info records accordingly

19. Unit of Measure Conversion Problems

Issue: UOM conversions causing quantity discrepancies[8]

Troubleshooting Steps:

1. Check UOM maintenance in CUNI
2. Verify conversion factors in material master MM02
3. Ensure base UOM is correctly defined
4. Test conversion in various transactions
5. Update conversion factors if business requirements changed

20. Material Description Language Issues

Issue: Material descriptions not maintained in required languages[8]

Troubleshooting Steps:

1. Use MM02 to maintain material descriptions
2. Switch to required language using System → User Profile
3. Enter descriptions in all required languages
4. Verify language-specific settings in material type
5. Test description display in different language environments

Integration Issues with Other Modules

21. FI-MM Integration: Account Determination Failure

Issue: Automatic account determination fails during goods receipt[9]

Troubleshooting Steps:

1. Check account determination configuration in OBYC
2. Verify valuation class assignment in material master
3. Ensure transaction/event keys are properly configured
4. Test account determination using OMWB
5. Update missing account assignments

22. MM-CO Integration: Cost Center Assignment Issues

Issue: Cost center assignments not flowing correctly to CO[9]

Troubleshooting Steps:

1. Verify real-time integration is active in SPRO
2. Check cost element mapping in KA03
3. Run reports KSB1 and FAGLF03 to identify discrepancies
4. Ensure proper account assignment in purchase documents
5. Activate real-time FI-CO integration if not done

23. MM-SD Integration Issues in Third-Party Sales

Issue: Purchase requisition not created automatically in third-party process[10]

Troubleshooting Steps:

1. Check material master MM02 - MRP view settings
2. Verify item category configuration in SD
3. Ensure vendor is assigned in info record ME11
4. Check customer-vendor linking if required
5. Test complete third-party sales cycle

24. GR/IR Account Clearing Issues

Issue: GR/IR account not clearing after invoice receipt[11]

Troubleshooting Steps:

1. Run automatic clearing F.13
2. Check PO history in ME2O for unmatched items
3. Verify tolerance settings in OMR6
4. Process unmatched items manually in MR11
5. Investigate and resolve quantity/price variances

25. MM-PP Integration: Production Order Material Issue

Issue: Goods issue for production not updating inventory[3]

Troubleshooting Steps:

1. Check goods issue movement type configuration in SPRO
2. Verify PP-MM integration settings are active
3. Validate production order BOM and routing
4. Check material availability in MB52
5. Process goods issue through MB1A if needed

WMS Integration Issues

26. MM-WMS Integration: Stock Discrepancies

Issue: Material movements in MM not reflected in WM[3]

Troubleshooting Steps:

1. Check integration settings in SPRO → LE → WM → Interfaces
2. Verify material master MM02 WM view settings
3. Run synchronization program LTMC
4. Check warehouse number assignment to storage location
5. Test material movement after synchronization

27. WMS Transfer Order Creation Failure

Issue: Transfer orders not created automatically for goods receipt[12]

Troubleshooting Steps:

1. Verify WM integration is activated for storage location
2. Check automatic TO creation settings in SPRO
3. Ensure proper storage type assignment in material master
4. Verify warehouse management unit conversions
5. Create TO manually using LT01 if needed

28. Storage Type Configuration Issues in WM

Issue: Materials cannot be stored due to storage type restrictions[12]

Troubleshooting Steps:

1. Check storage type configuration in LS02
2. Verify material-storage type assignment in MM02
3. Review storage section and storage bin settings
4. Check capacity and restriction parameters
5. Update configuration or storage strategy as needed

System Configuration and Authorization Issues

29. Authorization Object Missing for PGI

Issue: User cannot perform post goods issue due to missing authorization[7]

Troubleshooting Steps:

1. Identify missing authorization object using SU53
2. Check user roles in SU01
3. Request basis team to add authorization object
4. Use PFCG to update role authorization
5. Test transaction after authorization update

30. TM Integration: No XML Message Generation

Issue: MM orders not creating transportation requirements in TM[13]

Troubleshooting Steps:

1. Verify TM control key determination in purchase order
2. Check SPRO settings for TM integration activation
3. Ensure business function LOG_ESOA_OPS_2 is activated
4. Monitor SXI_MONITOR for XML message processing
5. Check BADI implementations for TM integration customization