Logical database &1 incomplete; Testing not possible.

What causes this issue?

The logical database you are trying to test is incomplete.

System Response

The test program cannot be created.

How to fix this error?

Choose the 'Test' function to find out which logical database
components are missing.

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.