You cannot post acquisitions to asset & &

What causes this issue?

You want to post an acquisition to this asset. However, according to
depreciation key &V3& that was used, acquisition postings are only
possible in the year of the initial acquisition or of the
capitalization date.

How to fix this error?

Check the asset number, the asset value date and the transaction type.
You have to create sub-numbers for subsequent acquisitions using this
depreciation key. However, these sub-numbers cannot adopt their
depreciation start date from the main asset number.

Error message extract from SAP system. Copyright SAP SE.