How To Fix KN453 - Key fields set to first items

SAP Error Message - Details

• Message type: E = Error

• Message class: KN - Reporting for Costing

• Message number: 453

• Message text: Key fields set to first items

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 KN453 - Key fields set to first items ?

  The SAP error message KN453 ("Key fields set to first items") typically occurs in the context of master data management, particularly when dealing with customer master records. This error indicates that the system is unable to process the data because certain key fields are not properly populated or are set to default values, which can lead to ambiguity or conflicts in the data.
  
  Cause:
  
  Missing Key Fields: The error often arises when required key fields (like customer number, company code, or sales area) are not filled in correctly or are left blank.
  Data Inconsistency: There may be inconsistencies in the data being processed, such as duplicate entries or incorrect references.
  
  Configuration Issues: The configuration settings in the SAP system may not be aligned with the data being entered, leading to conflicts.
  Batch Input Sessions: If you are using batch input sessions to upload data, the session may not have been set up correctly, causing the