How To Fix AXT_MODEL214 - 1:N table (&1) requires an unmapped key field

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_MODEL -

• Message number: 214

• Message text: 1:N table (&1) requires an unmapped key field

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_MODEL214 - 1:N table (&1) requires an unmapped key field ?

  The SAP error message AXT_MODEL214 indicates that there is an issue with a 1:N (one-to-many) relationship in your data model, specifically that a key field in the table is not properly mapped. This typically occurs in the context of SAP Data Modeling, such as when working with SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  The error arises when:
  
  A key field in a 1:N relationship is not defined or mapped correctly in the data model.
  The data model expects a unique identifier for the "one" side of the relationship, but it cannot find a corresponding key field in the "many" side.
  There may be inconsistencies in the data model configuration, such as missing or incorrectly defined attributes.
  
  Solution:
  To resolve the AXT_MODEL214 error, you can follow these steps:
  
  
  Check the Data Model Configuration:
  
  Open the data model in the SAP modeling tool (e.g., SAP BW Modeling Tools or SAP HANA Studio).
  Verify that the 1:N relationship is correctly defined. Ensure that the key field on the "one" side is properly mapped to the corresponding field on the "many" side.
  
  
  
  Define Key Fields:
  
  Ensure that the key fields are defined in both tables involved in the relationship. The key field on the "one" side should uniquely identify records, while the "many" side should reference this key.
  
  
  
  Mapping:
  
  If the key field is not mapped, you need to map it correctly. This may involve adjusting the data model or the underlying database tables to ensure that the key fields are aligned.
  
  
  
  Check for Data Consistency:
  
  Ensure that the data in the tables is consistent and that there are no missing values in the key fields. Inconsistent data can lead to mapping issues.
  
  
  
  Rebuild the Model:
  
  If the issue persists, consider rebuilding the data model or the specific relationship. Sometimes, starting fresh can resolve underlying issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on data modeling and resolving mapping issues.
  
  
  
  Testing:
  
  After making changes, test the data model to ensure that the error is resolved and that the relationships function as expected.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Training and Documentation: Consider reviewing training materials or documentation on SAP data modeling best practices to avoid similar issues in the future.
  
  By following these steps, you should be able to identify and resolve the cause of the AXT_MODEL214 error in your SAP environment.