How To Fix SOI_UPG126 - Table &1: Structure change but adaptation with alter is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: SOI_UPG - Message for SOI upgrade

• Message number: 126

• Message text: Table &1: Structure change but adaptation with alter is not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SOI_UPG126 - Table &1: Structure change but adaptation with alter is not possible ?

  The SAP error message SOI_UPG126 indicates that there is a structure change in a database table, but the adaptation using the ALTER command is not possible. This typically occurs during an upgrade or when changes are made to the data model of an SAP system.
  Cause:
  
  Table Structure Change: The error usually arises when there is an attempt to modify a table structure (like adding or removing fields) that cannot be executed due to certain constraints or conditions.
  Database Constraints: There may be existing constraints, such as foreign key relationships, that prevent the alteration of the table.
  Custom Modifications: If the table has been customized or has custom fields, the system may not allow changes to be made directly.
  Transport Issues: If the changes are part of a transport request that has not been properly imported or is inconsistent, it can lead to this error.
  
  Solution:
  
  Check Table Dependencies: Review the dependencies of the table in question. Ensure that there are no foreign key constraints or other dependencies that would prevent the alteration.
  Use Transaction SE14: You can use transaction SE14 (Database Utility) to check the table and see if there are any inconsistencies or issues that need to be resolved.
  Manual Adjustment: If the system does not allow the automatic adjustment, you may need to manually adjust the table structure using SQL commands or through the Data Dictionary (SE11).
  Review Custom Code: If there are custom modifications, review the custom code to ensure that it is compatible with the changes being made.
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on how to resolve it.
  Upgrade Guide: If this error occurs during an upgrade, refer to the upgrade guide provided by SAP for specific instructions related to your version.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE80 (Object Navigator).
  SAP Notes: Search for SAP Notes related to the specific version of SAP you are using, as they may provide specific fixes or workarounds.
  Documentation: Review the official SAP documentation for your version to understand the implications of table structure changes and how to manage them.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with SAP support or a technical consultant who specializes in SAP database management and upgrades.