How To Fix WTADDI301 - It is not possible to convert SAP unit of measure & to an ISO code

WTADDI301 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 301

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

Self-Explanatory Message

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WTADDI301 - Details

• SAP Error Message:
  WTADDI301 – "It is not possible to convert SAP unit of measure & to an ISO code"
  
  
  Cause:
  This error occurs when SAP tries to convert a unit of measure (UoM) used in the system to its corresponding ISO unit of measure code, but the system cannot find a valid mapping or conversion for the given SAP UoM.
  Typically, this happens in scenarios involving:
  
  Integration with external systems or interfaces that require ISO standard UoM codes.
  Output processing in Warehouse Management (WM), Transportation Management (TM), or Logistics Execution (LE) where ISO codes are mandatory.
  When using SAP Global Trade Services (GTS) or Advanced Shipping Notification (ASN) processes.
  When the unit of measure is custom or not maintained in the standard conversion tables.
  
  
  Explanation:
  SAP internally uses its own unit of measure codes (e.g., PC for pieces, KG for kilograms). However, for communication with external systems or compliance with international standards, SAP often needs to convert these to