How To Fix RW400 - Error when updating FI/CO document header data

RW400 - Overview

• Message type: E = Error

• Message class: RW - Interface to Accounting

• Message number: 400

• Message text: Error when updating FI/CO document header data

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 RW400 - Error when updating FI/CO document header data ?

  The SAP error message RW400 typically occurs when there is an issue with updating the Financial Accounting (FI) or Controlling (CO) document header data. This error can arise due to various reasons, including data inconsistencies, missing information, or configuration issues.
  Causes of RW400 Error
  
  Data Inconsistencies: The data being updated may not match the expected format or may contain invalid entries.
  Missing Required Fields: Certain mandatory fields in the document header may not be filled out, leading to the error.
  Authorization Issues: The user may not have the necessary permissions to update the document header data.
  
  Configuration Issues: There may be issues with the configuration settings in the FI/CO modules that prevent the update from being processed.
  Document Status: The document may be in a status that does not allow for updates (e.g., it may be locked or already posted).
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they may interfere