How To Fix BUX_EEW001 - Enter only one field as "Key Field"

SAP Error Message - Details

• Message type: E = Error

• Message class: BUX_EEW - Message Class for generic wizard for BP ABA 7.0

• Message number: 001

• Message text: Enter only one field as "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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BUX_EEW001 - Enter only one field as "Key Field" ?

  The SAP error message BUX_EEW001 ("Enter only one field as 'Key Field'") typically occurs in the context of the SAP Business Object Processing Framework (BOPF) or when working with certain data models in SAP. This error indicates that the system expects only one field to be designated as a "Key Field" in a particular context, but more than one field has been marked as such.
  Cause:
  
  Multiple Key Fields Defined: The most common cause of this error is that the user has defined multiple fields as key fields in a data model or configuration where only one is allowed.
  Incorrect Configuration: This can happen during the configuration of a BOPF object or when setting up a data model in transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator).
  Data Model Design: In some cases, the design of the data model may not align with the expected structure, leading to multiple fields being incorrectly marked as key fields.
  
  Solution:
  
  
  Review Key Field Configuration:
  
  Go to the relevant data model or BOPF object configuration.
  Check the fields that have been marked as key fields.
  Ensure that only one field is designated as the key field. If multiple fields are marked, remove the designation from all but one.
  
  
  
  Adjust Data Model:
  
  If the data model requires a different structure, consider redesigning it to accommodate the necessary key field requirements.
  Ensure that the key field chosen is appropriate for uniquely identifying records in the context of the application.
  
  
  
  Testing:
  
  After making changes, test the configuration to ensure that the error no longer occurs and that the application behaves as expected.
  
  
  
  Documentation:
  
  Refer to SAP documentation or help resources for guidance on defining key fields in your specific context, as the requirements may vary based on the version of SAP or the specific module you are working with.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on key field configurations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Transaction Codes: Familiarize yourself with transaction codes like SE11, SE80, and BOPF-related transactions to navigate and configure data models effectively.
  
  By following these steps, you should be able to resolve the BUX_EEW001 error and ensure that your data model is correctly configured.