How To Fix WRF_APC244 - No ref. material found for material group &1; scheduling not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 244

• Message text: No ref. material found for material group &1; scheduling not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_APC244 - No ref. material found for material group &1; scheduling not possible ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WRF_APC244 No ref. material found for material group &1; scheduling not possible
  
  Meaning / Cause:
  This error occurs during the production scheduling or planning process in SAP when the system tries to find a reference material for a given material group but fails to do so. The reference material is necessary for scheduling because it contains the master data or parameters required for planning.
  
  Material Group: A classification of materials that share common characteristics.
  Reference Material: A material within the group that has valid scheduling data (e.g., production versions, BOM, routing, or scheduling parameters).
  The system expects at least one reference material in the material group to perform scheduling.
  If no such reference material exists or is assigned, the system cannot proceed with scheduling and throws this error.
  
  
  Common Causes:
  
  No reference material assigned to the material group: The material group does not have any material flagged or designated as a reference material.
  Reference material missing master data: The reference material exists but lacks necessary master data like BOM, routing, or production versions.
  Incorrect or incomplete configuration: The material group or scheduling parameters are not properly maintained.
  Data inconsistency: The material group might be newly created or changed, but the reference material assignment was not updated.
  
  
  Solution / How to Fix:
  
  
  Assign a Reference Material to the Material Group:
  
  Use transaction CM01 or relevant planning transactions to check the material group.
  Assign a material within the group as the reference material.
  This material should have complete and valid master data (BOM, routing, production versions).
  
  
  
  Check Master Data of Reference Material:
  
  Verify that the reference material has all necessary data for scheduling:
  
  BOM (Bill of Materials)
  Routing or Recipe
  Production versions
  Scheduling parameters (lead times, lot sizes, etc.)
  
  
  
  
  
  Maintain Scheduling Parameters:
  
  Ensure that scheduling parameters are maintained for the material group and reference material.
  Use transaction CM02 or CM03 to check and maintain these parameters.
  
  
  
  Review Material Group Configuration:
  
  Check if the material group is correctly defined and linked to the reference material.
  Use transaction MMAM or relevant customizing transactions.
  
  
  
  Data Consistency Check:
  
  Run consistency checks or reports to identify missing or incomplete data.
  Correct any inconsistencies found.
  
  
  
  
  Additional Information:
  
  This error is common in Production Planning (PP) and Advanced Planning and Optimization (APO) scenarios.
  Reference materials serve as templates for scheduling other materials in the same group.
  Proper master data maintenance is critical for smooth scheduling and planning.
  If you are using SAP APO, ensure that the integration between SAP ERP and APO is correctly set up and master data is synchronized.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WRF_APC244 No ref. material found for material group &1; scheduling not possible
  
  
  Cause
  No reference material assigned or found for the material group; scheduling data missing
  
  
  Solution
  Assign a valid reference material with complete master data to the material group
  
  
  Transactions
  CM01, CM02, CM03, MMAM (or relevant planning/configuration transactions)
  
  
  Related Areas
  Production Planning (PP), APO, Master Data Management
  
  
  
  
  If you need help with specific transaction steps or further troubleshooting, please let me know!