How To Fix M3421 - Lot-sizing procedure requires storage costs indicator

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 421

• Message text: Lot-sizing procedure requires storage costs indicator

What causes this issue?

Ordering costs and a storage costs indicator are necessary for the
chosen lot-sizing procedure.

How to fix this error?

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Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3421 - Lot-sizing procedure requires storage costs indicator ?

  The SAP error message M3421, which states "Lot-sizing procedure requires storage costs indicator," typically occurs in the context of materials management and inventory management within SAP. This error indicates that the system requires a storage costs indicator to be defined for the lot-sizing procedure being used for a particular material.
  Cause:
  The error is triggered when:
  
  A lot-sizing procedure that requires a storage costs indicator is assigned to a material.
  The storage costs indicator is not maintained in the material master data or is not properly configured in the relevant settings.
  
  Solution:
  To resolve the M3421 error, you can follow these steps:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03).
  Check the relevant views (usually the Accounting and MRP views) to see if the storage costs indicator is maintained.
  If it is missing, you can update the material master (transaction code MM02) to include the storage costs indicator.
  
  
  
  Define Storage Costs Indicator:
  
  If the storage costs indicator is not defined, you may need to create or configure it in the system.
  Go to the configuration settings (transaction code SPRO).
  Navigate to Logistics > Material Management > Inventory Management and Physical Inventory > Define Storage Costs Indicator.
  Ensure that the necessary storage costs indicators are defined and assigned appropriately.
  
  
  
  Check Lot-Sizing Procedure:
  
  Review the lot-sizing procedure assigned to the material in the material master.
  Ensure that it is appropriate for the material and that it requires a storage costs indicator.
  
  
  
  Consult Documentation:
  
  If you are unsure about the specific storage costs indicators or lot-sizing procedures, refer to SAP documentation or consult with your SAP functional consultant for guidance.
  
  
  
  Testing:
  
  After making the necessary changes, test the transaction that triggered the error to ensure that it has been resolved.
  
  
  
  Related Information:
  
  Lot-Sizing Procedures: These are methods used in SAP to determine the quantity of materials to be produced or ordered. Different procedures may have different requirements, including the need for a storage costs indicator.
  Storage Costs Indicator: This is a key parameter in inventory management that helps in calculating the costs associated with storing materials. It can affect inventory valuation and overall cost management.
  Material Master Views: The material master contains various views that hold different types of data related to a material, including purchasing, sales, accounting, and storage data.
  
  By following these steps, you should be able to resolve the M3421 error and ensure that your material master data is correctly configured for the lot-sizing procedures in use.