How To Fix FL383 - With RFC modules, no generic types are allowed

FL383 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 383

• Message text: With RFC modules, no generic types are allowed

What causes this issue?

You attempted to assign a generic type to a parameter of 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?

You must assign either a reference field or a reference structure to
each function parameter.

Error message extract from SAP system. Copyright SAP SE.

FL383 - Details

• The SAP error message FL383 ("With RFC modules, no generic types are allowed") typically occurs when you are trying to use a generic data type in a Remote Function Call (RFC) module. RFC modules have specific requirements regarding data types, and generic types are not permitted in this context.
  
  Cause:
  The error arises when:
  
  You define a parameter in an RFC-enabled function module with a generic type (like ANY, TABLE, or STRING).
  The RFC interface cannot handle these generic types because they do not have a specific structure or format that can be serialized and transmitted over the network.
  
  
  Solution:
  To resolve this error, you should:
  
  
  Change Generic Types to Specific Types: Review the parameters of your RFC-enabled function module and replace any generic types with specific types. For example:
  
  Instead of using STRING, use CHAR or VARCHAR with a defined length.
  Instead of using TABLE, define a specific structure for the table.
  
  
  
  Define Structures: If you need to pass