Number range object &1 not maintained in client &2

What causes this issue?

When you create processes and procurement alternatives, internal system
cost estimate numbers from number range object &v1& are required. This
number range object, however, is not maintained in client &v2&.

System Response

You could not create any processes or procurement alternatives in
client &v2&.

How to fix this error?

Maintain number range object &v1& in client &v2&.

Error message extract from SAP system. Copyright SAP SE.