How To Fix BT090 - & was called with invalid operation code (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: BT - Background processing messages

• Message number: 090

• Message text: & was called with invalid operation code (&)

What causes this issue?

An undefined operation code 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 BT090 - & was called with invalid operation code (&) ?

  The SAP error message BT090 typically indicates that a function module or method was called with an invalid operation code. This error can occur in various contexts, such as when working with Business Transaction (BT) or Business Object (BO) frameworks in SAP.
  Cause:
  
  Invalid Operation Code: The most common cause of this error is that the operation code passed to a function module or method is not recognized or is not valid for the context in which it is being called.
  Configuration Issues: There may be issues with the configuration of the business object or transaction that is being processed.
  Custom Development: If there are custom developments or enhancements, they may not be handling the operation codes correctly.
  Data Issues: The data being processed may not meet the expected criteria, leading to an invalid operation code being generated.
  
  Solution:
  
  Check the Operation Code: Review the code or configuration where the operation code is being set. Ensure that it is valid and corresponds to the expected values for the function module or method being called.
  Debugging: Use the SAP debugger to trace the execution and identify where the invalid operation code is being generated. This can help pinpoint the exact location in the code or configuration that needs to be corrected.
  Review Custom Code: If there are custom developments involved, review the logic to ensure that it correctly handles the operation codes and does not generate invalid values.
  Consult Documentation: Refer to the SAP documentation for the specific function module or method to understand the valid operation codes and their expected usage.
  Check Configuration: If the error is related to a specific business object or transaction, check the configuration settings in the relevant customizing transactions to ensure they are set up correctly.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to check transaction codes like SE37 (Function Module), SE80 (Object Navigator), or SE11 (Data Dictionary) to investigate the function module or business object involved.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the BT090 error and implement a solution to resolve it.