How To Fix MU055 - Incorrect call of function module &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MU - Maintenance of structured materials

• Message number: 055

• Message text: Incorrect call of 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MU055 - Incorrect call of function module &1 ?

  The SAP error message MU055 ("Incorrect call of function module &1") typically indicates that a function module is being called in an incorrect context or with incorrect parameters. This error can arise in various scenarios, often related to the use of function modules in ABAP programs or during the execution of certain transactions.
  Causes:
  
  Incorrect Parameters: The function module is being called with parameters that do not match the expected input/output types or structure.
  Improper Context: The function module may be called in a context where it is not applicable, such as during a specific transaction or process.
  Missing Authorization: The user may not have the necessary authorizations to execute the function module.
  Version Mismatch: The function module may have been changed or updated, and the calling program has not been adjusted accordingly.
  Configuration Issues: There may be configuration settings that affect how the function module operates.
  
  Solutions:
  
  Check Parameters: Review the parameters being passed to the function module. Ensure they match the expected types and structures as defined in the function module documentation.
  Review Documentation: Look at the SAP documentation for the specific function module to understand its intended use and any prerequisites.
  Debugging: Use the ABAP debugger to step through the code and identify where the incorrect call is being made. This can help pinpoint the exact issue.
  Authorization Check: Ensure that the user executing the function module has the necessary authorizations. You can check this in transaction SU53 after the error occurs.
  Consult SAP Notes: Search for relevant SAP Notes that may address known issues with the function module in question. SAP Notes can provide patches or workarounds.
  Check for Updates: If the function module has been updated, ensure that your code is compatible with the latest version.
  Consult with SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it appears to be a bug or a more complex issue.
  
  Related Information:
  
  Function Module Documentation: You can access the documentation for the function module in transaction SE37 or SE80.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may be related to the function module or the process you are working with.
  ABAP Development: If you are a developer, ensure you follow best practices for error handling and parameter validation when calling function modules.
  
  By following these steps, you should be able to identify and resolve the cause of the MU055 error in your SAP environment.