SYST: Error when calculating last day in fiscal year.--> F1

What causes this issue?

While determining the last day of the period version &V2& of the
fiscal year &V1&, an error has occurred.

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?

This error could be produced from three different things:
The period version &V2& allocated to the company code has not been
created. In this case, you should create the period version.
The period version has been defined, but the allocation of calendar
dates to the fiscal periods has not been correctly performed, or in the
case of calendar-dependent period versions has not been completely
performed.
The calendar date &V1& is invalid. This is a system error. Contact your
Systems Specialist.

Error message extract from SAP system. Copyright SAP SE.