How To Fix AXT_MODEL114 - Field &2: Field with data type &1 cannot be used as logical key

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_MODEL -

• Message number: 114

• Message text: Field &2: Field with data type &1 cannot be used as logical 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AXT_MODEL114 - Field &2: Field with data type &1 cannot be used as logical key ?

  The SAP error message AXT_MODEL114 indicates that there is an issue with the data type of a field being used as a logical key in a data model. This error typically arises when the field's data type is not compatible with the requirements for a logical key in the context of the data model you are working with.
  Cause:
  
  Incompatible Data Type: The field you are trying to use as a logical key has a data type that is not allowed for logical keys. For example, certain data types like floating-point numbers or complex structures may not be suitable.
  Field Definition: The field may not be defined correctly in the underlying database or data model, leading to incompatibility.
  Modeling Constraints: The data model may have specific constraints or rules that restrict the use of certain data types as logical keys.
  
  Solution:
  
  Check Data Type: Review the data type of the field in question. Ensure that it is a simple and compatible data type, such as CHAR, NUMC, or INT, which are typically allowed for logical keys.
  Modify Field Definition: If the field's data type is not suitable, consider changing it to a compatible type. This may involve altering the database schema or the data model definition.
  Review Logical Key Requirements: Consult the documentation or guidelines for the specific data model you are working with to understand the requirements for logical keys.
  Use Alternative Fields: If changing the data type is not feasible, consider using a different field that meets the criteria for a logical key.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific module or data model you are working with to get detailed information about logical keys and their requirements.
  Data Model Design: Understanding the principles of data modeling in SAP can help prevent such issues. Familiarize yourself with the concepts of primary keys, foreign keys, and logical keys.
  SAP Community: Engage with the SAP Community forums or support channels to seek advice from other users who may have encountered similar issues.
  
  By addressing the data type and ensuring compliance with the logical key requirements, you should be able to resolve the AXT_MODEL114 error.