How To Fix B1438 - No application object type planned for the function module

B1438 - Overview

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 438

• Message text: No application object type planned for the function module

What causes this issue?

There is no application object type planned for the '&v1&' function
module.

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?

The allowed application object type must be allocated to the function
module. This allocation is made together with the allocation of the
function module to the message types and intermediate document types
that can be processed by this function module.

Error message extract from SAP system. Copyright SAP SE.

B1438 - Details

• The SAP error message B1438, which states "No application object type planned for the function module," typically occurs when there is an issue with the configuration of the application object types in relation to a specific function module. This error can arise in various contexts, such as when trying to execute a function module that is expected to interact with certain application objects, but those objects are not properly defined or configured in the system.
  Causes:
  
  Missing Configuration: The application object type that the function module is trying to access is not defined in the system.
  Incorrect Function Module Usage: The function module may not be intended for the application object type you are trying to use it with.
  Transport Issues: If the function module or its related configuration was transported from another system, it may not have been set up correctly in the target system.
  Authorization Issues: Sometimes, the user executing the function may