How To Fix W/147 - Unit & cannot be converted to ISO code

SAP Error Message - Details

• Message type: E = Error

• Message class: W/ -

• Message number: 147

• Message text: Unit & cannot be converted to ISO code

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W/147 - Unit & cannot be converted to ISO code ?

  SAP Error Message:
  
  W/147 Unit & cannot be converted to ISO code
  
  Cause:
  This warning message occurs when SAP tries to convert a unit of measure (UoM) to its corresponding ISO code but fails because the unit is either not maintained or not mapped correctly in the system. The system expects a valid ISO code for the unit of measure, especially in processes involving international standards, data exchange, or integration scenarios (e.g., EDI, IDocs, or external system communication).
  Common reasons include:  
  
  The unit of measure used in the document or master data is not assigned an ISO code in SAP.  
  The unit of measure is custom or non-standard and lacks an ISO mapping.  
  The relevant customizing for unit of measure ISO code assignment is incomplete or missing.
  
  
  Solution:
  
  
  Check Unit of Measure Master Data:
  
  Go to transaction CUNI (Units of Measure) or SPRO ? Logistics General ? Units of Measure ? Define Units of Measure.
  Verify if the unit in question exists and is correctly maintained.
  
  
  
  Assign ISO Code to Unit of Measure:
  
  In the unit of measure maintenance, assign the correct ISO code to the unit.
  The ISO codes are standardized codes for units (e.g., KG for kilogram, M for meter).
  If the unit is custom, determine the closest ISO equivalent or create a new mapping.
  
  
  
  Maintain ISO Code in Customizing:
  
  Use transaction SPRO ? Logistics General ? Units of Measure ? Assign ISO Codes to Units of Measure.
  Ensure that all units used in your business processes have corresponding ISO codes assigned.
  
  
  
  Check Integration Settings:
  
  If the error occurs during data exchange (e.g., IDoc processing), verify the mapping and conversion rules in the interface.
  Ensure that the middleware or interface layer correctly handles unit conversions.
  
  
  
  Data Consistency:
  
  Review the documents or master data triggering the warning.
  Correct any units that are invalid or inconsistent.
  
  
  
  
  Related Information:
  
  Message Class: W/147 is a warning, so the process may continue but with a caution.
  ISO Codes: International Organization for Standardization codes for units ensure consistency in global data exchange.
  Transactions:
  
  CUNI – Units of Measure maintenance.
  SPRO – Customizing for unit of measure and ISO code assignment.
  
  
  Notes & Documentation:  
  
  SAP Notes related to unit of measure and ISO code mapping may provide additional fixes or patches.
  Check SAP Help Portal for "Units of Measure" and "ISO Code assignment" for detailed guidance.
  
  
  
  
  Summary:
  The warning "Unit & cannot be converted to ISO code" indicates missing or incorrect ISO code assignment for a unit of measure. To resolve it, maintain the unit properly in SAP and assign the correct ISO code via customizing. This ensures smooth international data exchange and integration processes.