Account &1 isn't assigned to semantic tag &2.

What causes this issue?

You have imported a budget for account &v1&. However, account &v1& isn?t
assigned to semantic tag &v2&. Therefore, budget availability control
cannot be used for this account.

System Response

The system responds with a warning but accepts the import.

How to fix this error?

If you want to use budget availability control for account &v1&, you
must assign it to semantic tag &v2&.

Procedure for System Administrators

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.