How To Fix MPE_PLAN_EXEC018 - Base UOM of &1 and &2 differ

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_PLAN_EXEC - Message Class for Planning to Execution

• Message number: 018

• Message text: Base UOM of &1 and &2 differ

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_PLAN_EXEC018 - Base UOM of &1 and &2 differ ?

  The SAP error message MPE_PLAN_EXEC018 indicates that there is a discrepancy between the base unit of measure (UOM) for two materials or items involved in a planning or execution process. This typically occurs in scenarios where materials are being compared, transferred, or processed, and their units of measure do not match.
  Cause:
  The error arises when:
  
  Two materials (e.g., a component and a finished product) are being processed together, but they have different base units of measure.
  For example, one material might be measured in kilograms (kg) while the other is measured in grams (g), leading to a mismatch.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Material Master Data:
  
  Go to the material master records for both materials involved in the error.
  Verify the base unit of measure for each material. You can do this by navigating to the material master (transaction code MM03).
  
  
  
  Standardize Units of Measure:
  
  If the base UOMs are different, you may need to standardize them. This could involve changing the base UOM of one of the materials to match the other.
  This can be done in the material master using transaction code MM02 (change material).
  
  
  
  Review BOMs and Recipes:
  
  If the materials are part of a Bill of Materials (BOM) or a recipe, ensure that all components have consistent units of measure.
  Adjust the BOM or recipe as necessary to ensure compatibility.
  
  
  
  Check Configuration Settings:
  
  Review any configuration settings related to units of measure in your SAP system. Ensure that the settings allow for conversions if necessary.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for additional guidance on handling unit of measure discrepancies.
  
  
  
  Testing:
  
  After making changes, perform a test run to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  Unit of Measure Conversion: SAP allows for unit of measure conversions, but this must be set up correctly in the material master.
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  CS03: Display BOM
  C201: Create Production Order
  
  
  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 identify the cause of the error and implement a solution to resolve it.