How To Fix AJ491 - You Cannot Select Info Lines in Case of Back Billing in Step &1

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 491

• Message text: You Cannot Select Info Lines in Case of Back Billing in Step &1

What causes this issue?

You can only select field <DS:DE.BBINFOLINES>Information lines in case
of backbilling</> for schema steps for which a value has been enterd in
one of the following fields:
<DS:DE.BACKEXEC01>backbilling execution indicator</>
<DS:DE.DYNEXEC01>Schema step for dynamic execution in period control</>
This is not the case in step &V1&.

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?

The following options are available:
Deselect field <LS>Information lines in case of backbilling</>
Enter a backbilling execution indicator.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ491 - You Cannot Select Info Lines in Case of Back Billing in Step &1 ?

  The SAP error message AJ491, "You cannot select info lines in case of back billing in step &1," typically occurs in the context of billing processes, particularly when dealing with back billing scenarios. This error indicates that the system is preventing the selection of certain information lines due to the nature of the billing process being executed.
  Cause:
  The error is generally caused by the following factors:
  
  Back Billing Process: The system is designed to restrict certain actions during back billing to ensure data integrity and compliance with billing rules.
  Incorrect Step: The error message references a specific step in the billing process (indicated by &1). If the user is trying to perform an action that is not allowed in that step, the error will be triggered.
  Configuration Issues: There may be configuration settings in the billing module that restrict the selection of info lines during specific billing scenarios.
  
  Solution:
  To resolve the AJ491 error, consider the following steps:
  
  
  Review the Billing Process: Ensure that you are following the correct sequence of steps in the billing process. Check if you are trying to select info lines at a step where it is not permitted.
  
  
  Check Configuration Settings: Consult with your SAP configuration team to review the settings related to back billing. There may be specific configurations that need to be adjusted to allow the selection of info lines.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for detailed information on the billing process and restrictions related to back billing.
  
  
  User Authorization: Ensure that you have the necessary authorizations to perform the actions you are attempting. Sometimes, restrictions can be related to user roles and permissions.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  
  Testing in a Development Environment: If possible, replicate the scenario in a development or test environment to better understand the conditions under which the error occurs.
  
  
  Related Information:
  
  SAP Modules: This error is typically encountered in the SAP SD (Sales and Distribution) module, particularly in billing and invoicing processes.
  Transaction Codes: Familiarize yourself with relevant transaction codes related to billing, such as VF01 (Create Billing Document), VF02 (Change Billing Document), and VF03 (Display Billing Document).
  User Forums and Communities: Engage with SAP user communities or forums where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  
  If the issue persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.