How to check not allocate amount after material ledger costing run

Hello Community!

How to cheque not allocate magnitude aft worldly ledger costing run

Material Ledger & Actual Costing activated company

The worldly ledger colony is completed without errors.

In the Material Value Flow Monitor app, an magnitude is recorded nether Not Allocated for Cost Center and Activity Type 1 (Machine Hour).

Display Cost Center study app.

After manufacturing overhead allocation, the remaining equilibrium is -57 KRW. 

How should I cheque the Not Allocated Amount successful Cost Center/ActivityType?

Huny