How To Fix AXT_MODEL203 - Parent key &1 can only be mapped once in table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_MODEL -

• Message number: 203

• Message text: Parent key &1 can only be mapped once in table &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.

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 AXT_MODEL203 - Parent key &1 can only be mapped once in table &2 ?

  The SAP error message AXT_MODEL203 indicates that there is an issue with the mapping of parent keys in a specific table. This error typically arises in the context of data modeling or data integration processes, particularly when working with hierarchical data structures.
  Cause:
  The error message "Parent key &1 can only be mapped once in table &2" suggests that the parent key (denoted as &1) is being attempted to be mapped multiple times in the specified table (denoted as &2). This situation can occur due to:
  
  Duplicate Entries: The parent key is being referenced more than once in the mapping configuration.
  Incorrect Data Model: The data model may not be designed correctly, leading to multiple mappings of the same parent key.
  Configuration Errors: There may be errors in the configuration settings or mapping rules that allow for duplicate mappings.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Mapping Configuration: Review the mapping configuration for the table in question. Ensure that each parent key is only mapped once. Look for any duplicate entries or incorrect mappings.
  
  
  Data Model Review: Examine the data model to ensure that it is designed correctly. If the same parent key is intended to be used in multiple contexts, consider restructuring the model to avoid conflicts.
  
  
  Adjust Mapping Rules: If applicable, adjust the mapping rules to ensure that they enforce uniqueness for parent keys. This may involve modifying the logic used to create mappings.
  
  
  Consult Documentation: Refer to SAP documentation or help resources related to the specific module or functionality you are working with. There may be additional guidelines or best practices for handling parent-child relationships in your data model.
  
  
  Testing: After making changes, test the mapping again to ensure that the error is resolved and that the data is being processed as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP, especially regarding hierarchical data structures and parent-child relationships.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  
  By following these steps, you should be able to identify the root cause of the AXT_MODEL203 error and implement a solution to resolve it.