Period version &, client & not found

What causes this issue?

Plan version &V1& is assigned to controlling area &V3&. However, it
does not exist in client &V2& (T009).

System Response

The equivalence number cannot be written to table COSL (periodic)
because the number of periods of the controlling area cannot be
determined.

How to fix this error?

Check controlling area &V3& or the plan versions created for client
&V2& in table T009. If a valid period version is assigned to
controlling area &V3&, the conversion can be repeated.

Error message extract from SAP system. Copyright SAP SE.