How To Fix SE550 - Unit for conversion missing

SAP Error Message - Details

• Message type: E = Error

• Message class: SE - Dienstleistungen Stammdaten Leistungsposition

• Message number: 550

• Message text: Unit for conversion missing

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 SE550 - Unit for conversion missing ?

  The SAP error message SE550 "Unit for conversion missing" typically occurs when there is an issue with the unit of measure (UoM) in the system. This error can arise in various contexts, such as during the creation or modification of materials, when performing transactions that involve quantities, or when working with conversion factors.
  Cause:
  
  Missing Unit of Measure: The primary cause of this error is that the system cannot find a valid unit of measure for the conversion. This can happen if the unit of measure is not defined in the system or if it has been incorrectly configured.
  Incorrect Material Master Data: If the material master data does not have the necessary unit of measure information, this error can occur.
  Missing Conversion Factors: If there are no conversion factors defined between the units of measure involved in the transaction, the system will not be able to perform the conversion.
  Configuration Issues: There may be issues in the configuration of the units of measure in the SAP system.
  
  Solution:
  
  
  Check Unit of Measure Configuration:
  
  Go to the transaction code CUNI (Unit of Measure Conversion) to check if the unit of measure is defined and properly configured.
  Ensure that the unit of measure you are trying to use is active and not marked for deletion.
  
  
  
  Review Material Master Data:
  
  Use transaction code MM03 to display the material master data and check the "Basic Data" and "Purchasing" views for the unit of measure settings.
  Ensure that the relevant units of measure are maintained in the material master.
  
  
  
  Define Conversion Factors:
  
  If you are working with multiple units of measure, ensure that conversion factors are defined between them. This can be done in the same CUNI transaction.
  Make sure that the conversion factors are accurate and reflect the correct relationships between the units.
  
  
  
  Check for Custom Code or Enhancements:
  
  If there are any custom developments or enhancements in your SAP system that might affect unit of measure handling, review them to ensure they are functioning correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for additional guidance on unit of measure configuration and troubleshooting.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CUNI: Unit of Measure Conversion
  MM03: Display Material Master
  MM02: Change Material Master
  MM01: Create Material Master
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to unit of measure handling.
  
  
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to view and modify unit of measure settings.
  
  
  By following these steps, you should be able to identify and resolve the cause of the SE550 error in your SAP system. If the issue persists, consider reaching out to your SAP support team for further assistance.