&1 - non-leading ledger &2

What causes this issue?

For company code &V1& only non-leading ledger &V2& is associated with
the selected fiscal year variant ( which means that leading ledger for
this company code is not associated with the selected fiscal year
variant ).
As a result only data related to non-leading ledger &V2& of company code
&V1& will be considered and converted.

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.