How To Fix 8I645 - UOM & missing in Material master of &

SAP Error Message - Details

• Message type: E = Error

• Message class: 8I - Localization India

• Message number: 645

• Message text: UOM & missing in Material master of &

What causes this issue?

You have entered a Unit of Measure which is not valid for the material

System Response

You can enter a UOM here with a rate only if the conversion for the
same exists in the Material master

How to fix this error?

Check the UOM entered. If this is correct first maintain the UOM in the
material master with conversions

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 8I645 - UOM & missing in Material master of & ?

  The SAP error message 8I645 typically indicates that there is an issue with the Unit of Measure (UOM) in the Material Master record. This error can occur when the system is unable to find a valid UOM for a material during a transaction or process.
  Cause:
  
  Missing UOM in Material Master: The most common cause is that the Unit of Measure is not maintained in the Material Master for the specific material.
  Incorrect UOM Configuration: The UOM might be incorrectly configured or not linked properly to the material.
  Data Inconsistency: There may be inconsistencies in the data, such as missing entries in the UOM tables.
  Material Type Restrictions: Certain material types may have restrictions on the UOMs that can be used.
  
  Solution:
  
  
  Check Material Master:
  
  Go to transaction code MM03 (Display Material) and enter the material number.
  Check the Basic Data view and the Purchasing view to ensure that the UOM is maintained correctly.
  If the UOM is missing, you can add it using transaction code MM02 (Change Material).
  
  
  
  Maintain UOM:
  
  If the UOM is not defined, you can define it in the Material Master by navigating to the relevant views and entering the appropriate UOM.
  Ensure that the UOM is valid and exists in the UOM table (T006).
  
  
  
  Check UOM Configuration:
  
  Use transaction code OMN1 to check the UOM settings and ensure that the UOM is correctly configured for the material type.
  Verify that the UOM is linked to the correct base unit of measure.
  
  
  
  Data Consistency Check:
  
  Run a consistency check on the material master data to identify any discrepancies.
  Use transaction code MMR1 to check for inconsistencies in the material master.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for any specific configurations or settings that may be affecting the UOM.
  
  
  
  Related Information:
  
  Unit of Measure (UOM): UOM is a standard measurement used to quantify goods. In SAP, each material can have multiple UOMs (e.g., pieces, boxes, kilograms).
  Material Master Views: The Material Master has various views (Basic Data, Purchasing, Sales, etc.) where UOMs can be maintained.
  Transaction Codes:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  OMN1: UOM Configuration
  MMR1: Material Master Consistency Check
  
  
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis or functional team for further investigation.