How To Fix LTR_MODEL_APPL075 - Mapping mixes key components of the target's primary and secondary key

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR_MODEL_APPL -

• Message number: 075

• Message text: Mapping mixes key components of the target's primary and secondary key

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 LTR_MODEL_APPL075 - Mapping mixes key components of the target's primary and secondary key ?

  The SAP error message LTR_MODEL_APPL075 indicates that there is a problem with the mapping of key components in a data model, specifically that the mapping mixes key components of the target's primary and secondary keys. This typically occurs in the context of SAP Landscape Transformation (SLT) or data replication scenarios where data is being transformed or mapped from a source to a target system.
  Cause:
  The error arises when the mapping configuration for the data model incorrectly combines or mixes components that are defined as primary keys and secondary keys in the target system. This can happen due to:
  
  Incorrect Mapping Configuration: The mapping rules defined in the data model may not align with the key definitions in the target table.
  Data Model Design Issues: The design of the data model may not properly reflect the relationships and key constraints of the target system.
  Changes in Source or Target Schema: If there have been changes in the source or target schema (like adding or removing fields), the mapping may no longer be valid.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Review Mapping Configuration:
  
  Go to the data model configuration in the SLT or relevant tool.
  Check the mapping rules for the target table and ensure that primary key components are not mixed with secondary key components.
  
  
  
  Verify Key Definitions:
  
  Check the definitions of primary and secondary keys in the target table.
  Ensure that the mapping aligns with these definitions and that no primary key fields are being mapped to secondary key fields or vice versa.
  
  
  
  Adjust Data Model:
  
  If necessary, adjust the data model to ensure that the key components are correctly defined and mapped.
  Make sure that the relationships between the source and target tables are correctly represented.
  
  
  
  Test the Configuration:
  
  After making changes, test the configuration to ensure that the error is resolved and that data can be replicated or transformed without issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or guides related to SLT and data modeling for additional insights and best practices.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific configuration and environment.
  
  
  
  Related Information:
  
  SAP SLT (SAP Landscape Transformation): A tool used for real-time data replication and transformation between SAP and non-SAP systems.
  Data Modeling: The process of creating a data model that defines how data is connected, stored, and processed.
  Primary Key vs. Secondary Key: A primary key uniquely identifies a record in a table, while a secondary key is used for indexing and may not be unique.
  
  By following these steps and understanding the underlying causes, you should be able to resolve the LTR_MODEL_APPL075 error effectively.