Transaction code & cannot be entered

What causes this issue?

You can only maintain possible movement types for transaction codes
that are displayed in the MIGO (goods movement) transaction via the
entry <LS>MIGO</>.

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?

Maintain the entry <LS>MIGO</> if this does not already exist.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.