How To Fix /PM0/AB_AT128 - Check variant &1: Enter a data source

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/AB_AT -

• Message number: 128

• Message text: Check variant &1: Enter a data source

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/AB_AT128 - Check variant &1: Enter a data source ?

  The SAP error message /PM0/AB_AT128 Check variant &1: Enter a data source typically occurs in the context of the SAP Plant Maintenance (PM) module when a user is trying to execute a report or transaction that requires a data source to be specified, but none has been provided.
  Cause:
  
  Missing Data Source: The error indicates that a required data source has not been specified in the check variant. This could be due to the variant being incorrectly configured or not set up at all.
  Incorrect Configuration: The check variant may not have been properly defined to include a data source, leading to this error when attempting to use it.
  User Permissions: In some cases, the user may not have the necessary permissions to access or define the data source.
  
  Solution:
  
  
  Define a Data Source:
  
  Go to the transaction where the error occurs and check the configuration of the check variant.
  Ensure that a valid data source is specified. You can do this by navigating to the relevant configuration settings in the SAP system.
  If you are unsure how to do this, consult with your SAP administrator or refer to the documentation for the specific transaction.
  
  
  
  Modify the Check Variant:
  
  If you have access, modify the check variant to include a data source. This can usually be done in the variant settings where you can specify the parameters for the report or transaction.
  
  
  
  Check User Permissions:
  
  Ensure that you have the necessary permissions to access and modify the check variant and data source settings. If not, contact your SAP security administrator.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on setting up check variants and data sources in the context of the transaction you are using.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using specific transaction codes related to Plant Maintenance, such as IW38 (Change PM Orders) or IW39 (Display PM Orders).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Consider searching or posting in the SAP Community forums for insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the error and successfully execute the desired transaction or report in SAP.