How To Fix SY101 - Structure & changed (program &); start it again

SY101 - Overview

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 101

• Message text: Structure & changed (program &); start it again

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SY101 - Structure & changed (program &); start it again ?

  The SAP error message "SY101 Structure & changed (program &); start it again" typically occurs when there has been a change to the structure of a program or a data object while the program is still running. This can happen in various scenarios, such as when a developer modifies a data structure or program while users are still executing transactions that rely on that structure.
  
  Cause:
  
  Program Modification: The program or data structure has been modified after it was loaded into memory, which can happen if a developer makes changes to the ABAP code or data dictionary objects (like tables, views, or structures) while users are still using the program.
  Transport Requests: Changes that are transported from one system to another can also lead to this error if the program is running in the target system while the transport is being applied.
  Concurrent Users: Multiple users accessing the same program or transaction can lead