How To Fix WES_OUTBOUND134 - Purchase order unit &1 is not stored for material &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WES_OUTBOUND - Messages for Outbound Services

• Message number: 134

• Message text: Purchase order unit &1 is not stored for material &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WES_OUTBOUND134 - Purchase order unit &1 is not stored for material &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WES_OUTBOUND134 Purchase order unit &1 is not stored for material &2
  
  Meaning / Cause:
  This error occurs when the purchase order unit (the unit of measure used in the purchase order) is not maintained or defined for the specified material in the material master data. In other words, the system expects the purchase order unit to be available in the material master, but it cannot find it.
  
  &1 = Purchase order unit (e.g., EA, KG, L)
  &2 = Material number
  
  The purchase order unit must be maintained in the material master under the Units of Measure tab. If the unit used in the PO is not listed there, the system throws this error.
  
  Cause Details:
  
  The purchase order is created or processed with a unit of measure that is not assigned to the material.
  The material master does not have the purchase order unit maintained in the Additional Units of Measure or Base Unit of Measure.
  Sometimes, this can happen if the unit of measure is newly introduced or changed but not updated in the material master.
  
  
  Solution:
  
  
  Check the Purchase Order Unit:
  
  Identify the unit of measure used in the purchase order (from the error message &1).
  
  
  
  Maintain the Unit of Measure in Material Master:
  
  Go to transaction MM02 (Change Material).
  Enter the material number (&2).
  Navigate to the Units of Measure tab.
  Check if the purchase order unit (&1) is maintained as either:
  
  Base Unit of Measure, or
  Alternative Unit of Measure (purchase order unit).
  
  
  If not present, add the purchase order unit with the correct conversion factor to the base unit.
  
  
  
  Save the Material Master:
  
  After adding the unit, save the changes.
  
  
  
  Reprocess the Purchase Order:
  
  Retry the transaction that caused the error.
  
  
  
  
  Additional Information:
  
  The base unit of measure is mandatory for every material.
  Alternative units of measure can be maintained for purchasing, sales, and stockkeeping.
  The conversion factor between the base unit and the purchase order unit must be accurate to avoid inconsistencies.
  This error is common in scenarios involving integration with external systems or EDI where units of measure might differ.
  
  
  Related Transactions:
  
  MM02 – Change Material Master
  MM01 – Create Material Master
  ME21N – Create Purchase Order
  CUNI – Units of Measure (to check unit definitions)
  
  
  Summary:
  The error WES_OUTBOUND134 indicates that the purchase order unit used in the PO is not maintained in the material master for the specified material. To fix it, add the missing unit of measure in the material master under the Units of Measure tab and ensure proper conversion factors are set.
  
  If you need further assistance or specific steps for your SAP version, feel free to ask!