How To Fix 0K557 - &1 is key field in the item table, but not in the header table

0K557 - Overview

• Message type: E = Error

• Message class: 0K - Messages for "General List Modules"

• Message number: 557

• Message text: &1 is key field in the item table, but not in the header table

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 0K557 - &1 is key field in the item table, but not in the header table ?

  The SAP error message 0K557 indicates that there is a mismatch between the key fields in the item table and the header table in a particular transaction or process. This typically occurs when the system expects a certain key field to be present in both the header and item tables, but it is missing from one of them.
  
  Cause:
  
  Data Inconsistency: The most common cause of this error is data inconsistency between the header and item tables. This can happen if the data was manually altered or if there was an issue during data migration or integration processes.
  
  Configuration Issues: Incorrect configuration in the SAP system can lead to this error. For example, if the item table is configured to require a key field that is not defined in the header table.
  Custom Development: If there are custom programs or enhancements that manipulate the header and item data, they may not be handling the