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

FL392 - Overview

• 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