How To Fix LB165 - Proportion unit or product unit & may not be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 165

• Message text: Proportion unit or product unit & may not be changed

What causes this issue?

You want to assign a new reference unit of measure to the proportion
unit or product unit &V1&.
The change to the reference unit of measure is not allowed because
unit of measure &V1& is being used to define <DS:DE.MSEHI_WS>units of
measurement</>;
unit of measure &V1& is being used in one or more materials

System Response

Your current entries are reset.

How to fix this error?

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 LB165 - Proportion unit or product unit & may not be changed ?

  The SAP error message LB165, which states "Proportion unit or product unit & may not be changed," typically occurs in the context of handling materials, especially when dealing with batch management or when trying to change the unit of measure for a material that is already defined in a certain way.
  Cause:
  
  Unit of Measure Configuration: The error often arises when there is an attempt to change the unit of measure for a material that is already in use in a specific context (e.g., in a batch, in stock, or in a transaction).
  Batch Management: If the material is batch-managed, certain attributes related to the batch may restrict changes to the unit of measure.
  Material Master Data: The material master data may have restrictions or settings that prevent changes to the unit of measure.
  Proportion Units: If the material is linked to a proportion unit (used in production or planning), changing the product unit may not be allowed due to dependencies.
  
  Solution:
  
  Check Material Master Data: Review the material master data for the affected material. Ensure that the unit of measure settings are correct and that there are no restrictions preventing changes.
  Batch Management Settings: If the material is batch-managed, check the batch management settings. You may need to deactivate batch management or create a new batch with the desired unit of measure.
  Transaction Context: Ensure that there are no open transactions (like purchase orders, production orders, etc.) that are using the material in the current unit of measure. You may need to close or adjust these transactions before making changes.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on changing units of measure for materials, especially in the context of batch management.
  Use Alternative Units: If changing the unit of measure is not possible, consider using alternative units or creating a new material with the desired unit of measure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM02 (Change Material), MM03 (Display Material), and others that may help in managing material data.
  User Authorizations: Ensure that you have the necessary authorizations to make changes to material master data.
  Consult with SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves complex configurations or customizations.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.