How To Fix /SAPAPO/SNP852 - No conversion possible between unit of measure for product &1 and unit &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SNP -

• Message number: 852

• Message text: No conversion possible between unit of measure for product &1 and unit &2

Self-Explanatory Message

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• What is the cause and solution for SAP error message /SAPAPO/SNP852 - No conversion possible between unit of measure for product &1 and unit &2 ?

  The SAP error message /SAPAPO/SNP852 No conversion possible between unit of measure for product &1 and unit &2 typically occurs in the SAP Advanced Planning and Optimization (APO) module, specifically within the Supply Network Planning (SNP) component. This error indicates that there is an issue with the unit of measure (UoM) conversion for a specific product when trying to perform planning activities.
  Cause:
  
  
  Missing Conversion Factors: The most common cause of this error is that there are no defined conversion factors between the two units of measure involved. For example, if you are trying to convert from "liters" to "gallons" and there is no conversion factor defined in the system, this error will occur.
  
  
  Incorrect UoM Settings: The units of measure for the product may not be set up correctly in the material master or in the APO settings. This can include incorrect base units of measure or missing entries in the UoM table.
  
  
  Inconsistent UoM in Master Data: The product master data may have inconsistent or incorrect unit of measure settings, leading to conversion issues.
  
  
  Planning Book Settings: The planning book or data view being used may not be configured to handle the specific units of measure.
  
  
  Solution:
  
  
  Define Conversion Factors:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) in SAP.
  Check if the conversion factor between the two units of measure is defined. If not, create a new entry with the appropriate conversion factor.
  
  
  
  Check Material Master Data:
  
  Use transaction code MM03 to view the material master data for the product in question.
  Ensure that the units of measure are correctly defined and that the base unit of measure is set appropriately.
  
  
  
  Review UoM Settings in APO:
  
  Check the settings in the APO system to ensure that the units of measure are correctly configured.
  Ensure that the product is set up correctly in the APO master data.
  
  
  
  Adjust Planning Book Settings:
  
  If you are using a specific planning book, ensure that it is configured to handle the units of measure you are working with.
  You may need to adjust the key figures or characteristics in the planning book to accommodate the UoM.
  
  
  
  Consult Documentation: If the issue persists, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  
  Related Information:
  
  Transaction Codes:
  
  CUNI: Unit of Measure Conversion
  MM03: Display Material Master
  SNP1: SNP Planning Book
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to UoM conversions in your version of SAP.
  User Exits and BAdIs: If custom logic is involved, check for any user exits or BAdIs that may affect UoM handling.
  
  By following these steps, you should be able to resolve the error and ensure that the unit of measure conversions are correctly set up in your SAP system.