How To Fix LB255 - No proportion or product unit &2 is defined for material &1

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 255

• Message text: No proportion or product unit &2 is defined for material &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LB255 - No proportion or product unit &2 is defined for material &1 ?

  The SAP error message LB255 "No proportion or product unit &2 is defined for material &1" typically occurs in the context of inventory management or production planning when the system cannot find the necessary unit of measure (UoM) or proportion for a specific material. This can happen in various scenarios, such as during goods movements, production orders, or when trying to create a bill of materials (BOM).
  Cause:
  
  Missing Unit of Measure: The material in question does not have a defined product unit or proportion in the material master data.
  Incorrect Configuration: The configuration settings for the material or the related product unit may not be set up correctly.
  Data Inconsistency: There may be inconsistencies in the data, such as missing entries in the relevant tables (e.g., MARM for units of measure).
  Material Type Restrictions: Certain material types may have restrictions on the units of measure that can be used.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master (transaction code MM03) and check the "Basic Data" and "Sales Org. Data" views to ensure that the product unit and proportion are defined.
  Ensure that the unit of measure you are trying to use is listed in the "Units of Measure" section.
  
  
  
  Define Units of Measure:
  
  If the required unit of measure is missing, you can add it by going to the material master and editing the relevant views.
  Use transaction code CUNI to maintain units of measure if necessary.
  
  
  
  Check Proportions:
  
  If the material is part of a BOM or recipe, ensure that the proportions are correctly defined in the BOM or recipe settings.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the customizing (transaction SPRO) to ensure that the units of measure and proportions are correctly set up for the relevant material types.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the material master data to identify any discrepancies or missing information.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on handling units of measure and proportions.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  CUNI: Maintain Units of Measure
  CS03: Display BOM
  CS02: Change BOM
  
  
  
  Tables:
  
  MARM: Units of Measure for Material
  MARA: General Material Data
  MARC: Plant Data for Material
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  
  By following these steps, you should be able to resolve the LB255 error and ensure that the necessary units of measure and proportions are correctly defined for the material in question.