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

SAP Error Message - Details

• 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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Smart SAP Assistant

• What is the cause and solution for SAP error message R11801 - Key field &1 may not be changed in the case of an update / change ?

  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 the existing record and create a new one with the desired key field value, rather than updating the existing record.
  
  
  Check Data Entry: If the error occurs during data entry, ensure that users are not trying to change key fields in the user interface. Provide training or guidelines to prevent this.
  
  
  Consult Documentation: Review the relevant SAP documentation or data model to understand which fields are defined as key fields and the implications of changing them.
  
  
  Debugging: If you are a developer, use debugging tools to trace the execution of the program and identify where the key field is being modified.
  
  
  Consult with SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  Key Fields: In SAP, key fields are defined in the data dictionary (DDIC) and are essential for the integrity of database records.
  Database Integrity: Changing key fields can lead to orphaned records or inconsistencies in related tables, which is why SAP enforces restrictions on modifying them.
  Transaction Codes: Familiarize yourself with transaction codes related to the specific module you are working with, as they may have specific rules regarding key fields.
  
  By following these steps, you should be able to address the R11801 error effectively.