How To Fix F5A456 - This function might overwrite non-modifiable fields

F5A456 - Overview

• Message type: E = Error

• Message class: F5A - Document Editing

• Message number: 456

• Message text: This function might overwrite non-modifiable fields

What causes this issue?

Copying CPD data can overwrite fields that have been designated as
non-modifiable in the document change rules in Customizing.
INCLUDE 'CUSTOMIZED_MESSAGE_INFO' OBJECT DOKU ID TX

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message F5A456 - This function might overwrite non-modifiable fields ?

  The SAP error message F5A456, which states "This function might overwrite non-modifiable fields," typically occurs when there is an attempt to modify fields in a data structure that are not allowed to be changed. This can happen in various contexts, such as during data processing, updates, or when using certain function modules or BAPIs.
  
  Cause:
  
  Non-modifiable Fields: The error is triggered when a function or operation tries to change fields that are defined as non-modifiable in the data structure. This can happen if the fields are part of a standard SAP table or structure that is not meant to be altered.
  Incorrect Data Handling: If the program logic incorrectly assumes that certain fields can be modified, it may lead to this error.
  Custom Code Issues: If there is custom code that interacts with standard SAP functions or data structures, it may inadvertently attempt to modify non-modifiable fields.
  
  
  Solution:
  
  Review the Code: Check the code where the