How To Fix FU786 - Invalid call-up of function module &

SAP Error Message - Details

• Message type: E = Error

• Message class: FU - Utilities

• Message number: 786

• Message text: Invalid call-up of function module &

What causes this issue?

The function module &V1& was called up with inconsistent parameters.
The following parameters were used:

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

<ZH>Parameter,,Value</>
Calculation procedure,,&V2&
Country,,&V3&
Company code,,&V4&

System Response

How to fix this error?

Contact SAP to clarify whether the error can be corrected via the
configuration menu or whether a program correction is required.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FU786 - Invalid call-up of function module & ?

  The SAP error message FU786, which states "Invalid call-up of function module &," typically indicates that there is an issue with how a function module is being called in your ABAP code. This error can arise from various reasons, including incorrect parameters, the function module not being activated, or the function module not being available in the current context.
  Causes:
  
  Incorrect Function Module Name: The function module name being called may be misspelled or incorrect.
  Inactive Function Module: The function module may not be activated in the system.
  Parameter Mismatch: The parameters being passed to the function module may not match the expected parameters (e.g., wrong data types, missing required parameters).
  Authorization Issues: The user executing the function may not have the necessary authorizations to call the function module.
  Context Issues: The function module may not be available in the current context or may not be designed to be called from the location in the code where it is being invoked.
  
  Solutions:
  
  Check Function Module Name: Verify that the function module name is spelled correctly and exists in the system. You can do this by using transaction SE37 (Function Builder).
  Activate the Function Module: If the function module is inactive, activate it in transaction SE37.
  Review Parameters: Check the parameters being passed to the function module. Ensure that they match the expected input and output parameters in terms of data types and required fields.
  Check Authorizations: Ensure that the user has the necessary authorizations to execute the function module. You can check this in transaction SU53 after the error occurs.
  Debugging: Use the debugger to step through the code and identify where the error occurs. This can help you understand the context in which the function module is being called.
  Consult Documentation: Review the documentation for the function module to understand its intended use and any prerequisites for calling it.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Module Builder
  SE80: Object Navigator
  SE11: Data Dictionary
  SU53: Authorization Check
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific function module you are using.
  Community Forums: Consider searching or posting on SAP Community forums for additional insights from other users who may have encountered similar issues.
  
  If the problem persists after checking these areas, you may need to consult with your SAP Basis or ABAP development team for further assistance.