How To Fix UMM_CUSTOMIZING305 - You can only assign one characteristic to &1

SAP Error Message - Details

• Message type: E = Error

• Message class: UMM_CUSTOMIZING - Messages from the Management Cockpit Maintenance Transaction

• Message number: 305

• Message text: You can only assign one characteristic to &1

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 UMM_CUSTOMIZING305 - You can only assign one characteristic to &1 ?

  The SAP error message UMM_CUSTOMIZING305 indicates that you are trying to assign more than one characteristic to a specific object or configuration in the SAP system, where only one characteristic is allowed. This typically occurs in the context of SAP Variant Configuration or similar areas where characteristics are used to define product variants.
  Cause:
  The error arises when:
  
  You attempt to assign multiple characteristics to a single object (like a class or a configuration profile) that is designed to accept only one characteristic.
  There may be a misunderstanding of the configuration rules or limitations set in the system.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Configuration Settings:
  
  Check the configuration settings for the object you are working with. Ensure that it is indeed set to accept only one characteristic.
  
  
  
  Modify Assignments:
  
  If you have mistakenly assigned multiple characteristics, remove the additional characteristics and ensure that only one is assigned to the object.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or help files related to the specific module you are working with (e.g., Variant Configuration) to understand the limitations and requirements for characteristic assignments.
  
  
  
  Check Customizing Settings:
  
  If you are working in a customized environment, check with your SAP Basis or ABAP team to see if there are any custom settings or enhancements that might be affecting characteristic assignments.
  
  
  
  Testing:
  
  After making the necessary changes, test the configuration again to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently releases notes that address specific error messages and provide guidance on how to resolve them.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL02 (Change Class), CU01 (Create Characteristic), and CU02 (Change Characteristic) to manage characteristics and classes effectively.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to resolve the UMM_CUSTOMIZING305 error and ensure that your characteristic assignments are compliant with the system's requirements.