How To Fix AXT_RUNTIME_MESSAGES021 - Key &1&2&3 is initial; specify at least one key field in table &4

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_RUNTIME_MESSAGES - Extensibiltiy Runtime Messages

• Message number: 021

• Message text: Key &1&2&3 is initial; specify at least one key field in table &4

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_RUNTIME_MESSAGES021 - Key &1&2&3 is initial; specify at least one key field in table &4 ?

  The SAP error message AXT_RUNTIME_MESSAGES021 indicates that a required key field is missing or not specified in a particular table. This error typically arises when a program or transaction is trying to access data in a table, but the necessary key fields that uniquely identify a record are not provided.
  Cause:
  
  Missing Key Fields: The error occurs when the key fields (in this case, &1, &2, &3) that are supposed to identify a record in the specified table (&4) are not filled in or are left blank.
  Incorrect Configuration: There may be a configuration issue where the key fields are not properly set up in the system.
  Data Entry Error: Users may have failed to enter the required key fields in a form or transaction screen.
  Program Logic Error: If this error arises during the execution of a custom program, there may be a bug in the logic that populates the key fields.
  
  Solution:
  
  Check Input Fields: Ensure that all required key fields are filled in before executing the transaction or program. Review the input screen for any missing values.
  Review Configuration: If the error persists, check the configuration settings for the relevant table to ensure that the key fields are correctly defined.
  Debugging: If you are a developer or have access to debugging tools, you can debug the program to see where the key fields are being set and identify why they are not being populated.
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction or program to understand the required key fields.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Identify the transaction code that triggered the error to understand the context better.
  Table Structure: Look into the structure of the table mentioned in the error message to understand which fields are considered key fields.
  SAP Notes: Search for relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  User Authorization: Ensure that the user has the necessary authorizations to access and modify the data in the specified table.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.