How To Fix RTCMMD120 - Multiple assignment is not allowed for attribute &

SAP Error Message - Details

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 120

• Message text: Multiple assignment is not allowed for attribute &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RTCMMD120 - Multiple assignment is not allowed for attribute & ?

  The SAP error message RTCMMD120, which states "Multiple assignment is not allowed for attribute &," typically occurs in the context of Master Data Management (MDM) or when dealing with attributes in SAP systems, particularly in the context of data modeling or data assignment.
  Cause:
  This error usually arises when there is an attempt to assign multiple values to a single attribute that is defined to accept only one value. For example, if you are trying to assign multiple values to a characteristic or attribute in a master data record (like a material, customer, or vendor), and the system is configured to allow only a single value for that attribute, you will encounter this error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Attribute Configuration: Review the configuration of the attribute in question. Ensure that it is set up to allow multiple assignments if that is the intended use case. If it should only allow a single assignment, ensure that you are only providing one value.
  
  
  Data Validation: Validate the data you are trying to input. Make sure that you are not inadvertently trying to assign multiple values to the attribute. If you are using a data import or migration tool, check the source data for any inconsistencies.
  
  
  Modify Data Input: If the attribute is indeed meant to hold only a single value, modify your data input to ensure that only one value is being assigned. This may involve changing the way data is structured or how it is being processed before it is sent to SAP.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific module you are working with. This can provide insights into the expected behavior of attributes and how to configure them properly.
  
  
  Debugging: If you have access to debugging tools, you can trace the process that leads to the error to identify where the multiple assignments are being attempted.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance. They may have additional insights or solutions based on your specific configuration and use case.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Training and Documentation: Ensure that users involved in data entry or management are trained on the correct procedures for handling attributes in SAP to prevent similar errors in the future.
  
  By following these steps, you should be able to identify the cause of the RTCMMD120 error and implement a solution to resolve it.