How To Fix 0S121 - Enter only one transaction name or one program name

SAP Error Message - Details

• Message type: E = Error

• Message class: 0S - Messages for the SQL trace

• Message number: 121

• Message text: Enter only one transaction name or one program name

What causes this issue?

You have entered both a transaction name and a program name. However,
you may only enter one or the other.

System Response

Processing continues after the error message.

How to fix this error?

Change either the transaction name or program name entries.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 0S121 - Enter only one transaction name or one program name ?

  The SAP error message 0S121 ("Enter only one transaction name or one program name") typically occurs when a user attempts to execute a transaction or program in SAP but has provided multiple transaction names or program names in a context where only one is allowed. This can happen in various scenarios, such as when using transaction codes, executing reports, or calling programs.
  Cause:
  
  Multiple Entries: The user has entered more than one transaction code or program name in a field that only accepts a single entry.
  Incorrect Input: The input field may have been populated incorrectly, either by pasting multiple values or by a misunderstanding of the input requirements.
  System Configuration: In some cases, the system configuration or customizations may lead to unexpected behavior when executing transactions.
  
  Solution:
  
  Check Input: Ensure that you are entering only one transaction code or program name in the relevant field. Remove any additional entries.
  Use Correct Format: Make sure that the transaction code or program name is correctly formatted and does not contain any extra spaces or characters.
  Review Documentation: If you are unsure about the correct transaction code or program name, refer to the SAP documentation or consult with your SAP administrator.
  Test in a Different Environment: If possible, try executing the transaction or program in a different SAP environment (e.g., development or test) to see if the issue persists.
  Contact Support: If the problem continues after verifying your input, consider reaching out to your SAP support team for further assistance.
  
  Related Information:
  
  Transaction Codes: In SAP, transaction codes (T-codes) are shortcuts to access specific functions or programs. Each T-code corresponds to a specific task or report.
  Program Names: These are the names of executable programs in SAP that can be run directly.
  SAP GUI: The graphical user interface for SAP where users enter transaction codes or program names.
  Error Handling: Familiarize yourself with common SAP error messages and their resolutions to improve troubleshooting skills.
  
  By following these steps, you should be able to resolve the error message 0S121 and successfully execute the desired transaction or program in SAP.