How To Fix FL392 - Table types are only allowed in TABLES parameters in RFC

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 392

• Message text: Table types are only allowed in TABLES parameters in RFC

What causes this issue?

You tried to assign a table type to an EXPORTING or IMPORTING parameter
of a remotely-callable function module. These types are only allowed in
the TABLES parameters of remotely-callable function modules.

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 FL392 - Table types are only allowed in TABLES parameters in RFC ?

  The SAP error message FL392 indicates that there is an issue with the use of table types in Remote Function Call (RFC) parameters. Specifically, this error occurs when a table type is used in a parameter that is not defined as a TABLES parameter in an RFC-enabled function module.
  Cause:
  The error arises from the following situations:
  
  Incorrect Parameter Type: You are trying to use a table type in a parameter that is defined as an IMPORT or EXPORT parameter instead of a TABLES parameter.
  RFC Function Module Definition: The function module is not correctly defined to accept table types in the expected manner.
  
  Solution:
  To resolve the FL392 error, you can take the following steps:
  
  
  Check Function Module Definition:
  
  Open the function module in transaction SE37 or SE80.
  Ensure that the parameters that are intended to accept table types are defined as TABLES parameters.
  
  
  
  Modify Parameter Types:
  
  If you have parameters that are incorrectly defined as IMPORT or EXPORT, change them to TABLES if they are meant to handle table types.
  Ensure that the data types of the parameters match the expected table types.
  
  
  
  Review RFC Calls:
  
  When calling the RFC function module, ensure that you are passing the correct types of parameters. Only pass table types to TABLES parameters.
  
  
  
  Testing:
  
  After making the necessary changes, test the RFC call again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  RFC (Remote Function Call): This is a communication interface in SAP that allows for the execution of function modules in a remote system.
  TABLES Parameter: In SAP ABAP, TABLES parameters are used to pass internal tables to function modules. They are specifically designed to handle table types.
  Data Dictionary: You can check the data dictionary (transaction SE11) to see the definitions of the table types you are using.
  
  Additional Tips:
  
  Always ensure that the data types and structures are compatible when working with RFCs.
  If you are unsure about the definitions, consult with your ABAP developer or SAP Basis team for assistance.
  Review SAP Notes and documentation for any updates or specific guidelines related to your SAP version.
  
  By following these steps, you should be able to resolve the FL392 error and ensure that your RFC function modules are correctly defined and utilized.