How To Fix RSUOM028 - Quantity conversion type &1 not locked

SAP Error Message - Details

• Message type: E = Error

• Message class: RSUOM - BW: Conversion of Units of Measure

• Message number: 028

• Message text: Quantity conversion type &1 not locked

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSUOM028 - Quantity conversion type &1 not locked ?

  The SAP error message RSUOM028, which states "Quantity conversion type &1 not locked," typically occurs in the context of unit of measure (UoM) conversions in SAP. This error indicates that the system is unable to perform a quantity conversion because the specified conversion type is not locked, meaning that it can be modified or is not set to be used in a particular context.
  Cause:
  
  Unconfigured Conversion Type: The conversion type may not be properly configured or locked in the system.
  Missing Locking: The conversion type is not locked for the relevant UoM, which is necessary for the system to ensure that the conversion is stable and reliable.
  User Authorization: The user may not have the necessary authorizations to access or modify the conversion type.
  System Settings: There may be system settings or configurations that prevent the locking of the conversion type.
  
  Solution:
  
  
  Lock the Conversion Type:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) in SAP.
  Check the conversion type in question and ensure it is locked. If it is not, you can lock it by selecting the appropriate option.
  
  
  
  Check Configuration:
  
  Ensure that the conversion type is correctly configured in the system. This includes verifying that the source and target units of measure are correctly defined and that the conversion factors are accurate.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary authorizations to access and modify unit of measure conversions. This may involve checking user roles and permissions in the SAP system.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to unit of measure conversions for any additional configuration steps that may be required.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration or version.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  CUNI: Unit of Measure Conversion
  OMN1: Define Units of Measure
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP Help Portal for detailed information on unit of measure management and conversion types.
  
  By following these steps, you should be able to resolve the RSUOM028 error and ensure that your quantity conversions function correctly in SAP.