How To Fix BT091 - & was called with invalid dialog mode (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: BT - Background processing messages

• Message number: 091

• Message text: & was called with invalid dialog mode (&)

What causes this issue?

An undefined code for selecting dialog or silent mode was passed to the
background processing component named in the message. This error should
not occur unless the component is being called from a new or modified
program.

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?

Please contact SAP if this error occurs in a module delivered by SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BT091 - & was called with invalid dialog mode (&) ?

  The SAP error message BT091 indicates that a function module or transaction was called with an invalid dialog mode. This typically occurs when there is an issue with how a transaction is being executed, particularly in relation to the dialog mode specified.
  Cause:
  
  Invalid Dialog Mode: The error suggests that the dialog mode parameter passed to a function module or transaction is not recognized or is invalid. This can happen if the mode is incorrectly specified in the code or if there is a mismatch between the expected and actual dialog modes.
  Custom Code Issues: If there are custom developments or enhancements in the system, they might be passing incorrect parameters to standard SAP function modules or transactions.
  System Configuration: There might be configuration issues in the SAP system that affect how dialog modes are handled.
  
  Solution:
  
  
  Check the Code: Review the ABAP code where the function module or transaction is being called. Ensure that the dialog mode being passed is valid. Common dialog modes include:
  
  I for 'Interactive'
  E for 'Background'
  A for 'Asynchronous'
  S for 'Synchronous'
  
  Make sure that the mode being used is one of these valid options.
  
  
  Debugging: If you have access to the ABAP debugger, you can set breakpoints in the relevant code to see what parameters are being passed at runtime. This can help identify where the invalid dialog mode is being set.
  
  
  Check Custom Enhancements: If there are any custom enhancements or modifications in the system, review them to ensure they are not causing the issue. Sometimes, custom code can inadvertently introduce errors.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates that resolve known issues related to dialog modes.
  
  
  Consult Documentation: Review the documentation for the specific function module or transaction being called to ensure that you are using it correctly and that you understand the expected parameters.
  
  
  System Configuration: If the issue persists, consult with your SAP Basis team to check for any configuration issues that might be affecting dialog modes.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific function module or transaction to understand the expected parameters and usage.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Error Logs: Check the system logs (transaction SLG1) for any additional error messages or context that might help diagnose the issue.
  
  By following these steps, you should be able to identify the cause of the BT091 error and implement a solution to resolve it.