How To Fix DMC_RT_MSG100 - Duplicate keys for table &1, portion &2

DMC_RT_MSG100 - Overview

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 100

• Message text: Duplicate keys for table &1, portion &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG100 - Duplicate keys for table &1, portion &2 ?

  The SAP error message DMC_RT_MSG100 indicates that there are duplicate keys in a specific table during a data migration or data transfer process. This error typically arises in the context of SAP Data Migration Cockpit (DMC) or similar data handling scenarios where unique keys are expected for records in a table.
  
  Cause:
  
  Duplicate Records: The most common cause is that the source data contains duplicate records for the specified key fields. This can happen if the data extraction process did not filter out duplicates or if the source system has inherent data quality issues.
  Incorrect Mapping: If the mapping of fields from the source to the target table is not correctly defined, it may lead to the generation of duplicate keys.
  Data Transformation Issues: During the transformation phase, if the logic applied to create unique keys is flawed, it can result in duplicates.
  Concurrency Issues: If multiple processes are trying to insert records into the