Function module & does not exist

What causes this issue?

You want to classify a new object. However the function module needed
to read and lock the object in the allocate object and find object
functions has not yet been created. The object cannot be classified.

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?

Have the function module created via Transaction SE37. You can copy
from module OBJECT_CHECK_MARA to help you.
This function module is called dynamically in the allocate object and
find object functions.

Error message extract from SAP system. Copyright SAP SE.