How To Fix W5096 - Please enter a unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: W5 - Messages for MM-WEB Applications and BAPIs

• Message number: 096

• Message text: Please enter a unit of measure

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W5096 - Please enter a unit of measure ?

  SAP Error Message:
  
  W5096 - Please enter a unit of measure
  
  Cause:
  This warning message appears when a unit of measure (UoM) is required in a transaction or master data entry but has not been provided. SAP expects a valid unit of measure to process quantities correctly, for example, in material master data, purchase orders, sales orders, or goods movements.
  Common scenarios causing this message include:  
  
  Missing unit of measure in material master (e.g., Base Unit of Measure not maintained).  
  Missing unit of measure in item details during document creation (e.g., sales order line item, purchase order line item).  
  Incorrect or incomplete data entry where quantity is specified but UoM is left blank.
  
  
  Solution:
  
  
  Enter a valid Unit of Measure:
  
  When prompted, input the appropriate unit of measure for the quantity field. For example, "PC" (pieces), "KG" (kilograms), "L" (liters), etc.
  
  
  Check Material Master Data:  
  
  Go to transaction MM03 (Display Material) or MM02 (Change Material).  
  Verify that the Base Unit of Measure is maintained in the Basic Data view.  
  If missing, maintain the Base Unit of Measure in MM02 and save.
  
  
  
  Check Document Entry:  
  
  When creating or changing documents (purchase orders, sales orders, etc.), ensure that the unit of measure field is filled for each line item.  
  If the system does not default the UoM, manually enter it.
  
  
  
  Configuration Check (if applicable):  
  
  In some cases, the system might not default the UoM due to missing or incorrect configuration in the material master or transaction settings.  
  Verify the configuration in IMG under Logistics ? Materials Management ? Material Master ? Basic Settings ? Units of Measure.
  
  
  
  
  Related Information:
  
  Unit of Measure (UoM): A key field in SAP that defines the measurement unit for quantities of materials or services.  
  Base Unit of Measure: The standard unit in which stock quantities are managed for a material.  
  Additional Units of Measure: SAP allows alternative units (e.g., sales unit, purchasing unit) but the base unit must always be maintained.  
  Transaction Codes:  
  
  MM01/MM02/MM03 – Material Master maintenance  
  ME21N – Create Purchase Order  
  VA01 – Create Sales Order  
  MIGO – Goods Movement  
  
  
  
  
  Summary:
  Message W5096 is a prompt to ensure that a unit of measure is entered wherever quantity data is required. Always verify that the material master has a base unit of measure and that transactional documents include the UoM for each quantity field to avoid this warning.
  
  If you need help with a specific transaction or scenario where this message appears, please provide more details!