How To Fix WTADDI300 - It is not possible to convert ISO unit of measure & to a SAP code

SAP Error Message - Details

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 300

• Message text: It is not possible to convert ISO unit of measure & to a SAP code

Self-Explanatory Message

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• What is the cause and solution for SAP error message WTADDI300 - It is not possible to convert ISO unit of measure & to a SAP code ?

  SAP Error Message:
  
  WTADDI300 – "It is not possible to convert ISO unit of measure & to a SAP code"
  
  Cause:
  This error occurs when SAP encounters an ISO unit of measure (UoM) in a document or data input that it cannot map or convert to an internal SAP unit of measure code. Essentially, the system receives a UoM in ISO standard format (e.g., "KG", "M", "L") but does not find a corresponding SAP UoM in its conversion table or master data.
  This typically happens in scenarios such as:
  
  Data exchange interfaces (IDocs, BAPIs, EDI) where external systems send ISO UoM codes.
  Integration with external systems or middleware that use ISO UoM codes.
  Master data or transactional data where the UoM is not maintained or mapped properly.
  Missing or incomplete configuration in SAP for unit of measure conversions.
  
  
  Solution:
  
  
  Check and Maintain Unit of Measure Conversion:
  
  Go to transaction CUNI (Units of Measure) or CUNI1 (Units of Measure: Display).
  Verify if the ISO unit of measure code (e.g., "KG", "M") exists in SAP.
  If it does not exist, create or maintain the unit of measure with the correct ISO code.
  Ensure that the ISO code is correctly assigned to the SAP internal UoM.
  
  
  
  Maintain Unit of Measure Conversion Table:
  
  Use transaction CUNI or CUNI1 to check the conversion factors and ISO codes.
  If the ISO code is missing, add it and link it to the appropriate SAP UoM.
  
  
  
  Check Integration or Interface Mapping:
  
  If the error occurs during data transfer (e.g., IDoc processing), check the mapping between external ISO UoM and SAP UoM.
  Adjust the mapping in middleware or SAP PI/PO if applicable.
  
  
  
  Check Customizing for Units of Measure:
  
  Use transaction SPRO ? Logistics General ? Units of Measure ? Check Units of Measure.
  Verify that the units used in the business process are properly defined.
  
  
  
  Check for User Exits or BAdIs:
  
  Sometimes custom code may interfere with UoM conversion.
  Review any user exits or BAdIs related to unit of measure conversion.
  
  
  
  
  Related Information:
  
  Transaction Codes: CUNI, CUNI1, SPRO
  SAP Notes: Search SAP Support Portal for notes related to WTADDI300 or unit of measure conversion issues.
  Integration Scenarios: Pay special attention to EDI/IDoc segments like E1EDP01 (Purchase Order Item) where UoM is passed.
  ISO Codes: SAP uses ISO 80000 standard codes for units of measure; ensure consistency.
  SAP Help: Refer to SAP Help documentation on Units of Measure and their configuration.
  
  
  Summary:
  The error WTADDI300 indicates that SAP cannot find a mapping for the ISO unit of measure code received. The fix involves ensuring that the ISO UoM codes are properly maintained and mapped in SAP’s unit of measure master data and conversion tables. Also, verify interface mappings if the error occurs during data exchange.
  
  If you provide the exact ISO UoM code causing the error, I can help you with the specific steps to add or map it in SAP.