How To Fix ON123 - Selection of all interfaces switched on or off

SAP Error Message - Details

• Message type: E = Error

• Message class: ON - Tools in area Object Modeler / Object Editor

• Message number: 123

• Message text: Selection of all interfaces switched on or off

What causes this issue?

You have chosen Edit->Select on/off->Interfaces. On this and the
following screens all interfaces will now be displayed as selected or
unselected.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

No action is required. This is just for your information.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ON123 - Selection of all interfaces switched on or off ?

  The SAP error message ON123, which states "Selection of all interfaces switched on or off," typically occurs in the context of the SAP system when there is an issue with the configuration of interfaces in a particular transaction or process. This error can arise in various scenarios, such as during data transfer, interface configuration, or when executing certain reports.
  Cause:
  
  Interface Configuration: The error often indicates that all interfaces for a particular process or transaction have been either enabled or disabled, which is not allowed. This could be due to incorrect settings in the configuration.
  Data Transfer Issues: If you are trying to transfer data between systems or modules and all interfaces are set to the same state (either all on or all off), the system may throw this error.
  User Input: Sometimes, user input during a transaction can inadvertently lead to this situation, especially if there are checkboxes or options that allow for the selection of multiple interfaces.
  
  Solution:
  
  Check Interface Settings: Go to the configuration settings for the relevant transaction or process and ensure that the interfaces are correctly configured. Make sure that not all interfaces are set to the same state.
  Adjust User Selections: If the error is due to user input, review the selections made during the transaction. Ensure that at least one interface is enabled while others can be disabled, or vice versa.
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction or module you are working with. This can provide insights into the expected configuration and usage.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with SAP's customer support for further assistance.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, specific transaction codes may be relevant. For example, if this error occurs during data migration, transaction codes like LSMW (Legacy System Migration Workbench) or others related to data transfer might be involved.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  System Logs: Review system logs (transaction SLG1) for additional details that may help diagnose the issue further.
  
  By following these steps, you should be able to identify the cause of the ON123 error and implement a solution to resolve it.