How To Fix FL374 - Generic typing is not possible with update modules

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 374

• Message text: Generic typing is not possible with update modules

What causes this issue?

You tried to give a parameter belonging to an update module a generic
data type (e.g. type C). However, this is not possible in the case of
update modules because they require all technical attributes
(e.g. the length) to be known.

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?

Give each of the parameters a fully specified data type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL374 - Generic typing is not possible with update modules ?

  The SAP error message FL374, which states "Generic typing is not possible with update modules," typically occurs in the context of SAP's Financial Accounting (FI) or Controlling (CO) modules when there is an issue with the way data is being processed in update modules. This error is often related to the use of generic types in the context of update function modules, which are not allowed in certain scenarios.
  Cause:
  
  Generic Typing: The error arises when a generic data type is used in an update function module. In SAP, update function modules are expected to have specific data types defined for their parameters. Using generic types can lead to ambiguity and is not supported.
  Incorrect Function Module Definition: If the function module is defined incorrectly or if it is trying to handle data in a way that is not compatible with the update processing, this error can occur.
  Data Structure Issues: If the data structures being passed to the update module are not properly defined or if they contain generic types, this can trigger the error.
  
  Solution:
  
  Check Function Module Definition: Review the definition of the update function module. Ensure that all parameters are defined with specific data types rather than generic types. Replace any generic types with specific ones.
  Review Data Structures: If you are passing data structures to the update module, ensure that these structures do not contain any generic types. Define the structures with specific fields and types.
  Debugging: Use the SAP debugger to trace the execution of the update function module. This can help identify where the generic typing is being introduced.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module you are using. There may be specific guidelines or restrictions regarding the use of data types.
  Testing: After making changes, test the function module thoroughly to ensure that it works as expected without triggering the error.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling update function modules.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  ABAP Development Guidelines: Familiarize yourself with best practices in ABAP development, especially regarding the use of data types and function modules.
  
  By addressing the root cause of the error and ensuring that all data types are explicitly defined, you should be able to resolve the FL374 error in your SAP environment.