Only an unplanned posting run is possible in this fiscal year.

What causes this issue?

You have already posted in fiscal years that come after &V2&. This
means that you can only post in the last posting period &V1& in fiscal
year &V2&. Or you can post to a special period, if one is set up. Since
you have not posted yet in this fiscal year, you must specify that the
depreciation posting run is unplanned.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please check the fiscal year entered. If you are certain you want to
post to fiscal year &V1&, you must start the depreciation posting run
in the last posting period (or in the special period). Be sure to
indicate that this posting run is unplanned, since it falls outside of
the normal posting cycle.

Error message extract from SAP system. Copyright SAP SE.