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