438 SAP Message of Class B1 No application object type planned for the function module

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438(B1) - No application object type planned for the function module

Message number 438 of class B1 is used to display message "No application object type planned for the function module" and can be triggered using the following ABAP code:

    MESSAGE W438(B1). "Warning message example
    MESSAGE I438(B1). "Information message example
    MESSAGE E438(B1). "Error message example
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What causes this issue

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

System Response

How to fix

The allowed application object type must be allocated to the function
module. This allocation is made together with the allocation of thefunction module to the message types and intermediate document typesthat can be processed by this function module.
Message text extract from SAP system. Copyright SAP SE.

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