SAP Message F5201 - Posting period & & is not open

Diagnosis
Period &V1& of fiscal year &V2& is not open for posting for the variantof posting period &V4&.

System Response
Processing cannot be continued.

Procedure
The error can have several causes. In order to eliminate the error,proceed as follows:
RESET N1
Check whether the posting date was entered correctly. The systemdetermines the posting period by means of the date.
Check whether the required posting period is open for posting for thevariant of posting period &V4& and account type &V3&. Make sure that theperiod is open for posting.
To do this, specify a period interval in which the required period forthe variant of posting period &V4& and account type &V3& is contained.
You make these settings in Customizing of Financial Accounting (New) under Financial Accounting Global Settings (New) -> Ledgers ->Fiscal Year and Posting Periods - > Posting Periods -> Open and ClosePosting Periods.

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