How To Fix WSUBST026 - Error while reading Customizing settings for switchover information

WSUBST026 - Overview

• Message type: E = Error

• Message class: WSUBST - Substitution Article Handling

• Message number: 026

• Message text: Error while reading Customizing settings for switchover information

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WSUBST026 - Error while reading Customizing settings for switchover information ?

  SAP Error Message:
  WSUBST026 - Error while reading Customizing settings for switchover information
  
  
  Cause:
  This error typically occurs when the system tries to read the switchover customizing settings but encounters missing or inconsistent configuration data. The switchover settings are part of the system's configuration for handling system availability, such as during system copy, system refresh, or system switchover scenarios (e.g., in high availability or system landscape management).
  Common causes include:
  
  Missing or incomplete entries in the switchover customizing tables.
  Inconsistent or corrupted customizing data related to system switchover.
  Transport or system copy activities that did not properly update the switchover customizing.
  Authorization issues preventing the system from reading the customizing data.
  Issues with the table TWSWITCH or related tables that store switchover information.
  
  
  
  Solution:
  
  
  Check Switchover Customizing:
  
  Go to transaction SWITCH or SM30 and check the customizing tables related to switchover, such as TWSWITCH.
  Verify that all required entries are present and consistent.
  
  
  
  Reimport or Reapply Customizing:
  
  If the customizing data is missing or corrupted,