How To Fix MD183 - Lot size procedure &1 is not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 183

• Message text: Lot size procedure &1 is not defined

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MD183 - Lot size procedure &1 is not defined ?

  The SAP error message MD183, which states "Lot size procedure &1 is not defined," typically occurs in the context of Material Requirements Planning (MRP) when the system is unable to find a defined lot size procedure for a specific material or planning scenario. This can hinder the planning process, as the lot size procedure is essential for determining how much of a material should be produced or procured.
  Cause:
  
  Missing Lot Size Procedure: The lot size procedure specified in the material master or in the MRP settings is not defined in the system.
  Incorrect Configuration: The configuration settings for lot size procedures may not be correctly set up in the system.
  Material Master Data Issues: The material master record may not have the appropriate lot size procedure assigned.
  Planning Strategy Issues: The planning strategy used for the material may not be compatible with the lot size procedure.
  
  Solution:
  
  
  Define Lot Size Procedure:
  
  Go to the configuration settings in SAP (Transaction code: SPRO).
  Navigate to Production ? Basic Data ? Lot Size ? Define Lot Size Procedures.
  Ensure that the required lot size procedure is defined and active.
  
  
  
  Assign Lot Size Procedure to Material:
  
  Use transaction code MM02 to change the material master record.
  Navigate to the MRP view and check the lot size procedure field. Assign the correct lot size procedure if it is missing.
  
  
  
  Check Planning Strategy:
  
  Ensure that the planning strategy assigned to the material is compatible with the lot size procedure.
  You can check this in the material master under the MRP view.
  
  
  
  Review MRP Settings:
  
  Check the MRP settings for the plant and ensure that the lot size procedures are correctly configured.
  
  
  
  Consult Documentation: If you are unsure about the appropriate lot size procedure to use, consult your organization's documentation or SAP help resources for guidance on best practices.
  
  
  Related Information:
  
  Lot Size Procedures: These are rules that determine how much of a product should be produced or ordered. Common types include fixed lot size, lot-for-lot, and economic order quantity.
  Material Master: This is a central repository of information related to materials in SAP, and it contains various views that define how materials are managed in the system.
  MRP Views: The MRP views in the material master contain critical information for planning, including lot size procedures, safety stock, and planning strategies.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in MRP and material management.