How To Fix 06766 - Conversion factor replaced by one already defined

SAP Error Message - Details

• Message type: E = Error

• Message class: 06 -

• Message number: 766

• Message text: Conversion factor replaced by one already defined

What causes this issue?

The factor for converting the <GL:base_unit_of_measure>base unit of
measure</> into the <GL:order_unit>purchase order unit</> or the
<GL:purchase_order_price_unit>purchase order price unit</> into the
purchase order unit has been changed. The information came either from
the material master record or from the info record.

How to fix this error?

Please check the new conversion factor for correctness. If necessary,
change it.
<ZH>Note</>
In a PO item, it is not possible to change the factor for converting
the purchase order price unit into the purchase order unit if the
former is identical to the base unit of measure.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 06766 - Conversion factor replaced by one already defined ?

  The SAP error message "06766 Conversion factor replaced by one already defined" typically occurs in the context of material master data or when dealing with unit of measure (UoM) conversions in SAP. This error indicates that there is a conflict in the conversion factors defined for a particular unit of measure, where a new conversion factor is attempting to replace an existing one.
  Cause:
  
  Duplicate Conversion Factors: The error arises when you try to define a conversion factor for a unit of measure that already has a conversion factor defined in the system.
  Data Entry Errors: It may occur due to incorrect data entry or an attempt to create a conversion that is not unique.
  Master Data Issues: If the material master or related data has inconsistencies or errors, it can lead to this message.
  
  Solution:
  
  
  Check Existing Conversion Factors:
  
  Navigate to the material master data (transaction code MM02 or MM03).
  Check the unit of measure (UoM) settings for the material in question.
  Review the existing conversion factors to see if the one you are trying to enter already exists.
  
  
  
  Modify or Delete Existing Conversion:
  
  If the conversion factor you are trying to enter is indeed already defined, you may need to modify the existing conversion factor or delete it if it is no longer needed.
  Ensure that the conversion factors are unique and correctly defined.
  
  
  
  Use Transaction Codes:
  
  Use transaction code CUNI to manage unit of measure conversions directly.
  You can view and edit the conversion factors for different units of measure.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to unit of measure conversions for additional guidance.
  
  
  
  Check for Customizations:
  
  If your organization has custom developments or enhancements, check if any custom logic is affecting the conversion factors.
  
  
  
  Related Information:
  
  Unit of Measure (UoM): In SAP, UoM is crucial for inventory management, purchasing, and sales processes. Each material can have multiple UoMs with defined conversion factors.
  Material Master Data: The material master contains all the information a company needs to manage a material, including its UoM settings.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in material management.