How To Fix EZ579 - Import parameter &2 in form interface &1 has incorrect category (&3)

SAP Error Message - Details

• Message type: E = Error

• Message class: EZ - Print workbench

• Message number: 579

• Message text: Import parameter &2 in form interface &1 has incorrect category (&3)

What causes this issue?

You have used a variable in the form interface and the variable has a
different data type than defined in the user top include. This can lead
to runtime errors.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EZ579 - Import parameter &2 in form interface &1 has incorrect category (&3) ?

  The SAP error message EZ579 indicates that there is an issue with the import parameter in a form interface. Specifically, it states that the import parameter &2 in the form interface &1 has an incorrect category (&3). This error typically arises in the context of SAP Smart Forms or SAPscript when there is a mismatch in the expected data type or category of the parameter being passed to the form.
  Cause:
  
  Incorrect Data Type: The parameter being passed to the form does not match the expected data type defined in the form interface. For example, if the form expects a character type and an integer is passed, this error may occur.
  Parameter Definition: The parameter may not be defined correctly in the form interface, or it may have been changed after the form was created.
  Calling Program Issues: The program or function module that calls the form may be passing the wrong type of data or not passing the parameter at all.
  Category Mismatch: The category of the parameter (e.g., input, output, or input/output) may not align with what the form expects.
  
  Solution:
  
  Check Parameter Definition: Review the form interface definition in the Smart Forms or SAPscript. Ensure that the parameter &2 is defined correctly with the appropriate data type and category.
  Verify Calling Program: Inspect the program or function module that calls the form. Ensure that it is passing the correct data type and that the parameter is being populated correctly.
  Adjust Data Types: If there is a mismatch, adjust the data types in the calling program or modify the form interface to accept the correct type.
  Test with Sample Data: Run tests with sample data to ensure that the parameters are being passed correctly and that the form processes them without errors.
  Check for Changes: If the form or the calling program has been modified recently, check for any changes that might have introduced the error.
  
  Related Information:
  
  Smart Forms Documentation: Review SAP documentation on Smart Forms to understand how to define and use form interfaces properly.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: Use the debugger to step through the code where the form is called to see the values being passed to the parameters.
  Community Forums: Look for discussions in SAP community forums or SAP support channels where similar issues may have been addressed.
  
  By following these steps, you should be able to identify the root cause of the EZ579 error and implement a solution to resolve it.