How To Fix USMD1187 - Entity type &1: Duplicate data record &2 cannot be written

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 187

• Message text: Entity type &1: Duplicate data record &2 cannot be written

What causes this issue?

The system passed data of entity type &V1& to the data buffer in order
to write this data. This data contains two data records that have
identical keys, but different values. The leading characters of one of
these data records are &V2&.

System Response

The system has not transferred data to the data buffer.

How to fix this error?

Correct your entries (if applicable) or notify SAP.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1187 - Entity type &1: Duplicate data record &2 cannot be written ?

  The SAP error message USMD1187 indicates that there is an attempt to write a duplicate data record for a specific entity type in the Master Data Governance (MDG) application. This typically occurs when the system detects that the data being processed already exists in the database, violating the uniqueness constraints defined for that entity type.
  Cause:
  
  Duplicate Data Entry: The most common cause is that the data being submitted for processing already exists in the system. This could happen if the same record is being created or updated multiple times.
  Incorrect Data Mapping: If the data being imported or processed is incorrectly mapped, it may lead to the creation of records that are considered duplicates.
  Concurrency Issues: If multiple users or processes are trying to create or update the same record simultaneously, it can lead to this error.
  Configuration Issues: The uniqueness constraints for the entity type may not be correctly defined, leading to unexpected behavior.
  
  Solution:
  
  Check for Existing Records: Before attempting to create or update a record, check the database to see if a record with the same key already exists. This can often be done through transaction codes or reports that allow you to search for existing master data.
  Data Validation: Implement data validation checks in your data entry or import processes to prevent duplicates from being submitted.
  Review Data Mapping: Ensure that the data being processed is correctly mapped and that there are no errors in the data transformation process.
  Handle Concurrency: If multiple users are working on the same data, consider implementing locking mechanisms or using transaction management to prevent concurrent modifications.
  Adjust Configuration: Review the configuration settings for the entity type in MDG to ensure that the uniqueness constraints are correctly defined and enforced.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like MDGIMG to access the configuration settings for Master Data Governance.
  Logs and Traces: Check the application logs (transaction SLG1) for more detailed information about the error and the context in which it occurred.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  Documentation: Refer to the official SAP documentation for Master Data Governance for best practices on data management and error handling.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to prevent it from occurring in the future.