SAP Message AC173 - &1 can be ready for input only if &2 is also ready for input

Diagnosis
The depreciation posting cycle must coincide with the posting periodsin your Financial Accounting. In particular, it may not exceed themaximum number &V1&, currently defined for the company code.

Procedure
Either specify a posting cycle which is a factor of &V1& or which is,at the most, equal to &V1&.