How To Fix ITOB012 - Internal error when calling function module &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ITOB - Messages for development class ITOB

• Message number: 012

• Message text: Internal error when calling function module &1

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message ITOB012 - Internal error when calling function module &1 ?

  The SAP error message ITOB012, which states "Internal error when calling function module &1," typically indicates that there is an issue with the execution of a function module in the SAP system. This error can arise from various underlying causes, and addressing it often requires a systematic approach. Here are some potential causes, solutions, and related information:
  Causes:
  
  Coding Errors: There may be a bug or issue in the custom code or enhancements that are calling the function module.
  Data Issues: The data being passed to the function module may be invalid or not in the expected format.
  Configuration Issues: Incorrect configuration settings in the system can lead to this error.
  System Bugs: There may be a known issue or bug in the SAP system version you are using.
  Authorization Issues: The user executing the function may not have the necessary authorizations to call the function module.
  
  Solutions:
  
  
  Check the Function Module: 
  
  Use transaction SE37 to check the function module mentioned in the error message. Look for any issues in the code or parameters.
  
  
  
  Review the Call Stack: 
  
  Analyze the call stack to identify where the error is occurring. This can provide insights into what data is being passed and where the failure happens.
  
  
  
  Debugging: 
  
  If you have access, use the debugger to step through the code and identify the exact point of failure. This can help in understanding the context of the error.
  
  
  
  Data Validation: 
  
  Ensure that the data being passed to the function module is valid and meets the expected criteria. Check for null values, incorrect formats, or missing mandatory fields.
  
  
  
  Check for Notes and Patches: 
  
  Search the SAP Support Portal for any relevant SAP Notes or patches that address this specific error or the function module in question.
  
  
  
  Authorization Check: 
  
  Verify that the user has the necessary authorizations to execute the function module. Use transaction SU53 to check for authorization failures.
  
  
  
  Consult SAP Support: 
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the function module name and any relevant logs.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE37 (Function Builder)
  SE80 (Object Navigator)
  ST22 (Dump Analysis)
  SM21 (System Log)
  
  
  
  SAP Notes: 
  
  Regularly check the SAP Support Portal for any updates or notes related to the specific function module or error message.
  
  
  
  Documentation: 
  
  Review the official SAP documentation for the function module to understand its expected behavior and parameters.
  
  
  
  By following these steps, you should be able to diagnose and resolve the ITOB012 error in your SAP system.