How To Fix STREX120 - Operation not allowed on a read only index

SAP Error Message - Details

• Message type: E = Error

• Message class: STREX - Message for TREX ABAP Client

• Message number: 120

• Message text: Operation not allowed on a read only index

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message STREX120 - Operation not allowed on a read only index ?

  The SAP error message STREX120, which states "Operation not allowed on a read-only index," typically occurs when there is an attempt to perform a write operation (such as an update, delete, or insert) on an index that is set to read-only. This can happen in various contexts, such as when working with database indexes or when using certain data structures in ABAP programs.
  
  Cause:
  
  Read-Only Index: The index you are trying to modify is marked as read-only. This can happen if the index is part of a database view or if it has been explicitly set to read-only in the application logic.
  Database Locking: The index might be locked due to a transaction that is currently in progress, preventing any modifications.
  Incorrect Logic: The program logic may be attempting to perform an operation that is not allowed on the specified index.
  
  
  Solution:
  
  Check Index Properties: Verify the properties of the index in question. Ensure that it