How To Fix ME851 - No valid unit of measurement can be determined for ISO code &

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 851

• Message text: No valid unit of measurement can be determined for ISO code &

What causes this issue?

The document cannot be processed because no unit of measurement can be
determined for ISO code &V1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

INCLUDE NA_SYSADMIN1 LANGUAGE EN

Procedure for System Administrators

Check the units of measure in Customizing (general settings) and
maintain them if necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ME851 - No valid unit of measurement can be determined for ISO code & ?

  The SAP error message ME851 indicates that the system is unable to determine a valid unit of measurement (UoM) for a given ISO code. This typically occurs in the context of materials management, particularly when dealing with purchasing documents or material master data.
  Cause:
  
  Missing or Incorrect ISO Code: The ISO code provided in the transaction may not be valid or may not correspond to any unit of measurement defined in the system.
  Unit of Measurement Not Defined: The unit of measurement for the material may not be defined in the material master data.
  Configuration Issues: There may be issues in the configuration of units of measurement in the system, such as missing entries in the relevant tables.
  Data Inconsistencies: There could be inconsistencies in the data, such as a mismatch between the material master and the purchasing info records.
  
  Solution:
  
  Check ISO Code: Verify that the ISO code being used is correct and corresponds to a valid unit of measurement in the system.
  Review Material Master Data: Go to the material master (transaction code MM03) and check if the unit of measurement is defined correctly for the material in question.
  Define Units of Measurement: If the unit of measurement is missing, you can define it in the system using transaction code CUNI (Maintain Units of Measure).
  Check Configuration: Ensure that the configuration for units of measurement is set up correctly in the system. This can be done through the SPRO transaction (SAP Reference IMG).
  Update Purchasing Info Records: If applicable, check the purchasing info records (transaction code ME13) to ensure that the correct unit of measurement is specified.
  Consult Documentation: Review SAP documentation or help resources for additional guidance on units of measurement and ISO codes.
  
  Related Information:
  
  Transaction Codes: 
  
  MM03: Display Material Master
  CUNI: Maintain Units of Measure
  ME13: Display Purchasing Info Record
  SPRO: SAP Reference IMG
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to view and edit material master data and configuration settings.
  
  By following these steps, you should be able to identify the root cause of the ME851 error and implement the necessary corrections to resolve it.