3607050 - Periods of FY variant for ledger & and leading ledger must be same - SAP S/4 HANA Public Cloud

• The system does not allow the configuration of K4 (Fiscal Year variant =calendar year) as a fiscal year variant for Non-Leading Ledger when SZ (Apr.-Mrch 5-4-4 , 4 spec. prds) is set as a fiscal year variant in Leading Ledger 0L.
• The error message "Periods of FY variant for ledger 2L and leading ledger must be same" is displayed.

SAP S/4 HANA Public Cloud Edition

The issue is due to a system restriction in SAP S/4 HANA Public Cloud. The posting period start dates and end dates of the alternative fiscal year variants must not differ from the posting period start and end dates of the common fiscal year variant assigned to the leading ledger.

See reference in KBA 3169537 - SAP S/4HANA Cloud Public Edition: Release Restriction Note for the Alternative Fiscal Year Variant 
and blog: How to Add Fiscal Year Variants in SAP S/4HANA Cloud  

There is a similar request already present in the SAP Customer Influence Portal.
Vote for it:

Request ID: 316085 - fiscal year variant. 

SAP S/4 HANA Public Cloud, fiscal year variant, Non-Leading Ledger, Leading Ledger, system restriction, error message, K4, SZ, 4-4-5 period, configuration. , KBA , FI-GL-GL-2CL , Basic Functions (Public Cloud) , Problem