How To Fix C1132 - Unit used cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 132

• Message text: Unit used cannot be changed

What causes this issue?

You want to change the unit of measurement for a characteristic.
This is not allowed once allowed values have been maintained for the
characteristic, or once the characteristic is used.

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?

Change your entries.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1132 - Unit used cannot be changed ?

  The SAP error message C1132 ("Unit used cannot be changed") typically occurs in the context of material management or inventory management when there is an attempt to change the unit of measure for a material that is already in use in transactions or has existing stock.
  
  Cause:
  
  Existing Transactions: The unit of measure for a material cannot be changed if there are existing transactions (like goods movements, purchase orders, etc.) that reference that material.
  Stock Levels: If there is stock on hand in the current unit of measure, SAP will prevent changes to ensure data integrity.
  Configuration Settings: Certain configuration settings in the material master may restrict changes to the unit of measure.
  
  
  Solution:
  
  Check Existing Transactions: Review any existing transactions related to the material. You can use transaction codes like MB51 (Material Document List) or ME23N (Display Purchase Order) to find related documents.
  Clear Stock: If there is stock in the current unit of measure, you