How To Fix FL382 - All parameters in RFC require a reference field or reference type

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 382

• Message text: All parameters in RFC require a reference field or reference type

What causes this issue?

You have defined a parameter without a reference field or a type.in a
remotely called function module. This is not supported.

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?

Assign either a reference field or a reference structure to every
parameter.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL382 - All parameters in RFC require a reference field or reference type ?

  The SAP error message FL382 indicates that there is an issue with the parameters in a Remote Function Call (RFC). Specifically, it means that all parameters in the RFC must have a reference field or reference type defined, and this requirement has not been met.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Missing Reference Field/Type: The RFC function module is defined without specifying a reference field or reference type for one or more of its parameters.
  Incorrect Parameter Definition: The parameters may not be correctly defined in the function module, leading to the system not recognizing them as valid reference fields.
  Incompatibility with RFC: The function module may not be compatible with RFC calls due to the way parameters are structured.
  
  Solution:
  To resolve the FL382 error, you can take the following steps:
  
  
  Check Function Module Definition:
  
  Go to transaction SE37 (Function Module) and enter the name of the function module that is causing the error.
  Review the parameters defined in the function module. Ensure that all parameters that require a reference field or reference type have been properly defined.
  
  
  
  Define Reference Fields:
  
  For each parameter that is causing the error, ensure that a reference field or reference type is specified. This can be done by editing the parameter attributes in the function module definition.
  
  
  
  Use Data Dictionary Types:
  
  If you are using custom types, ensure that they are correctly defined in the Data Dictionary (transaction SE11) and that they include reference fields.
  
  
  
  Check for Changes:
  
  If the function module was recently modified, check if any changes might have inadvertently removed or altered the reference fields.
  
  
  
  Testing:
  
  After making the necessary changes, activate the function module and test the RFC call again to see if the error persists.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to RFC and function module definitions for additional guidance.
  
  
  
  Related Information:
  
  RFC (Remote Function Call): A protocol used in SAP to enable communication between different SAP systems or between SAP and non-SAP systems.
  Function Module: A reusable piece of code in SAP that can be called from other programs or function modules.
  Data Dictionary: A central repository in SAP that contains definitions of data elements, structures, tables, and types.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or ABAP development team for further assistance, as they may have more insights into the specific configuration and setup of your SAP environment.