How To Fix 56805 - At least one optional parameter must be specified when method is called

SAP Error Message - Details

• Message type: E = Error

• Message class: 56 - HR TRAVEL: Messages for Trip Costs Dialog

• Message number: 805

• Message text: At least one optional parameter must be specified when method is called

What causes this issue?

You tried to call a method but have only entered the mandatory
parameters. For this method there are other optional parameters
which must be specified.
These are not considered mandatory parameters since, as a rule,
only one of them requires values whereas the others can remain
initial.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 56805 - At least one optional parameter must be specified when method is called ?

  The SAP error message 56805, which states "At least one optional parameter must be specified when method is called," typically occurs in the context of ABAP programming, particularly when dealing with method calls in classes. This error indicates that a method that has optional parameters was called without providing any of those optional parameters, which is not allowed in the specific context of the method's implementation.
  Cause:
  
  Method Definition: The method in question is defined with optional parameters, but the implementation requires at least one of those parameters to be provided when the method is called.
  Incorrect Call: The method is being called without any parameters, or with parameters that do not meet the requirements set in the method definition.
  Business Logic: The business logic may dictate that at least one optional parameter must be specified for the method to execute correctly.
  
  Solution:
  
  Check Method Definition: Review the method definition in the class to understand which parameters are optional and what the requirements are for calling the method.
  Provide Parameters: When calling the method, ensure that at least one of the optional parameters is provided. This can be done by modifying the method call in your ABAP code.
  Review Documentation: If available, consult the documentation for the method to understand its expected behavior and requirements.
  Debugging: If the issue persists, use debugging tools to trace the method call and inspect the parameters being passed to identify any discrepancies.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for more details on method definitions and parameter handling.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and to find potential solutions or workarounds.
  Error Handling: Implement error handling in your ABAP code to catch such issues early and provide meaningful messages to users or logs.
  
  By ensuring that at least one optional parameter is specified when calling the method, you should be able to resolve the error message 56805.