hi
The error message "Cannot create a record in Fiscal calendar period (FiscalCalendarPeriod). The record already exists." indicates that there is already a record in the FiscalCalendarPeriod table with the same combination of fiscal year, period type, and period number that you are trying to create.
To resolve this issue, you need to identify the existing record in the FiscalCalendarPeriod table that is causing the conflict. Here are the steps to do this:
Open the AOT (Application Object Tree) in Dynamics AX.
Navigate to the Data Dictionary > Tables node.
Find the FiscalCalendarPeriod table in the list of tables and open it.
Use the Find function to search for the record that is causing the conflict. You can search by fields such as Calendar, FiscalYear, PeriodType, and PeriodNumber to narrow down the search.
Once you've identified the existing record, compare its details to the record you were trying to create to determine if there are any differences that may be causing the conflict.
If necessary, update the record you were trying to create with the correct details and save it again.
It's also possible that the error message is caused by a synchronization issue. In this case, try synchronizing the table to ensure that all records are up to date.
Daniele