How To Fix W4318 - & - Source list ...................................: &

SAP Error Message - Details

• Message type: E = Error

• Message class: W4 - Messages for material discontinuation

• Message number: 318

• Message text: & - Source list ...................................: &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W4318 - & - Source list ...................................: & ?

  Certainly! Here's a detailed explanation for SAP error message W4318:
  
  SAP Message W4318
  Message Text:
  
  Source list ...................................: &
  
  1. Cause
  The warning message W4318 typically appears when there is an issue related to the Source List in the SAP Materials Management (MM) module, specifically during procurement or MRP (Material Requirements Planning) runs.
  
  The system is indicating that the Source List for a particular material or plant is either missing, incomplete, or not maintained properly.
  The placeholder & in the message usually contains the material number or source list identifier.
  This warning is triggered when the system expects a valid source list entry for a material but cannot find one or finds an invalid entry.
  
  Common causes include:
  
  No source list maintained for the material and plant combination.
  The source list entry is expired or not valid for the current date.
  The source list does not contain a valid vendor or purchasing info record.
  The source list is not flagged as relevant for MRP or procurement.
  
  
  2. Solution
  To resolve the warning W4318, you should:
  
  
  Check the Source List:
  
  Use transaction ME03 (Display Source List) or ME01 (Create Source List) to verify if a source list exists for the material and plant.
  Check if the source list entries are valid for the current date.
  Ensure that the source list contains valid vendors and purchasing info records.
  
  
  
  Maintain or Update the Source List:
  
  If missing, create a source list entry for the material and plant.
  If expired, extend the validity dates.
  Ensure the source list is flagged as relevant for MRP or procurement (checkbox "Relevant for MRP" or "Fixed Source").
  
  
  
  Check Vendor and Purchasing Info Records:
  
  Verify that the vendor assigned in the source list has a valid purchasing info record for the material.
  Use transaction ME11 or ME12 to maintain purchasing info records.
  
  
  
  Run MRP or Procurement again:
  
  After maintaining the source list properly, rerun the MRP or procurement process to check if the warning disappears.
  
  
  
  
  3. Related Information
  
  Source List is a tool in SAP MM to specify allowed vendors for a material in a plant and to control procurement sources.
  It helps in procurement planning and ensures that only approved vendors are used.
  Source lists can be maintained manually or generated automatically.
  The message W4318 is a warning, not an error, so the process may continue but with a caution that source list data is missing or incomplete.
  Related transactions:
  
  ME01 - Create Source List
  ME02 - Change Source List
  ME03 - Display Source List
  ME11 - Create Purchasing Info Record
  ME12 - Change Purchasing Info Record
  
  
  Related SAP Notes or documentation can be checked if the issue persists after source list maintenance.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Missing, expired, or invalid source list entry for material/plant during procurement or MRP
  
  
  Solution
  Maintain or update source list entries using ME01/ME02/ME03; ensure valid vendors and info records
  
  
  Info
  Source list controls allowed vendors; warning W4318 indicates missing or invalid source list data
  
  
  
  
  If you need help with specific steps or transaction codes, feel free to ask!