How To Fix >3748 - Error in interface for function module &1

SAP Error Message - Details

• Message type: E = Error

• Message class: >3 - Lock management messages

• Message number: 748

• Message text: Error in interface for 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message >3748 - Error in interface for function module &1 ?

  The SAP error message 3748 ("Error in interface for function module &1") typically indicates that there is an issue with the data being passed to a function module. This error can arise from various causes, and understanding the context in which it occurs is crucial for troubleshooting.
  Causes:
  
  Data Type Mismatch: The data being passed to the function module does not match the expected data types or structures defined in the function module interface.
  Missing Required Fields: Required fields in the input structure may be missing or not populated correctly.
  Incorrect Parameter Passing: Parameters may be passed in the wrong order or with incorrect names.
  Authorization Issues: The user executing the function may not have the necessary authorizations to access the function module.
  Function Module Not Active: The function module may not be active or may have been deactivated in the system.
  Custom Code Issues: If the function module is a custom one, there may be issues in the custom code that need to be addressed.
  
  Solutions:
  
  Check Data Types: Verify that the data types of the parameters being passed to the function module match the expected types.
  Validate Input Data: Ensure that all required fields are populated and that the data is valid.
  Review Parameter Passing: Double-check the order and names of the parameters being passed to the function module.
  Check Authorizations: Ensure that the user has the necessary authorizations to execute the function module.
  Activate Function Module: If the function module is custom, ensure it is active in the system.
  Debugging: Use the debugger to step through the code and identify where the error occurs. This can help pinpoint the exact issue with the data being passed.
  Consult Documentation: Review the documentation for the function module to understand its requirements and constraints.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE37 (Function Module) to view the function module and its interface.
  ST22: Check for short dumps in transaction ST22, which may provide additional context about the error.
  SLG1: Use transaction SLG1 to check application logs for any related messages that might give more insight into the error.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues with the specific function module.
  
  By following these steps, you should be able to identify and resolve the cause of the error message 3748 in SAP.