AFAB - error message KI 235 - Account XXXXXX requires an assignment to a CO

Hi,

We have entered the unplanned depreciation in our testing system but we are getting above error message when we run AFAB.

I found some threads about this error so I have checked following settings:

1. Asset Accounting >Integration with the General Ledger >Additional Account Assignment Objects-->Activate Account Assignment Objects - KOSTL is activated

2. Tcode ACSET is OK (it is the same as in the Production System)

2. Table ANLZ - all assets for our company code have valid cost centres assigned

Do you have any idea why this message suddenly appeared?

Thanks

D.