How To Fix UGMD8123 - Conversion damages unique indexes

UGMD8123 - Overview

• Message type: E = Error

• Message class: UGMD8 - Change Management

• Message number: 123

• Message text: Conversion damages unique indexes

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 UGMD8123 - Conversion damages unique indexes ?

  The SAP error message UGMD8123, which states "Conversion damages unique indexes," typically occurs during data conversion or migration processes, particularly when working with database tables that have unique indexes. This error indicates that the data being processed may violate the constraints of unique indexes, leading to potential data integrity issues.
  
  Cause:
  
  
  Duplicate Data: The most common cause of this error is the presence of duplicate records in the data being converted or migrated. If the data being inserted or updated contains values that would violate the uniqueness of an index, this error will be triggered.
  
  
  Data Transformation Issues: During data transformation, if the logic applied to the data results in duplicates, this can also lead to the error.
  
  
  Incorrect Mapping: If the mapping of fields from the source to the target does not maintain uniqueness, it can cause this error.
  
  
  Concurrency Issues: If multiple processes are trying to insert or update records simultaneously, it may