Could not replicate data as function module &1 does not exist in system.

What causes this issue?

Function module &V1& does not exist in this system.

System Response

Data cannot be replicated if the function module is missing.

How to fix this error?

Implement the SAP Note &V2& to get the function module object in the
system. Execute the report again after you have implemented the SAP
Note.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.