How To Fix R11801 - Key field &1 may not be changed in the case of an update / change

R11801 - Overview

• Message type: E = Error

• Message class: R11 - Business Partner and BDT

• Message number: 801

• Message text: Key field &1 may not be changed in the case of an update / change

Self-Explanatory Message

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R11801 - Details

• The SAP error message R11801 indicates that a key field in a database table is being modified during an update or change operation, which is not allowed. Key fields are critical for identifying records uniquely in a database, and changing them can lead to data integrity issues.
  
  Cause:
  The error typically occurs when:
  
  An attempt is made to change a key field value in a record that already exists in the database.
  The program logic or user action inadvertently tries to update a key field that is defined as non-changeable in the database schema.
  
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review the Code/Logic: Check the code or transaction that is causing the error. Ensure that key fields are not being modified unintentionally. If the key field should not be changed, remove the logic that attempts to change it.
  
  
  Use the Correct Functionality: If you need to change a key field, you may need to delete