Last Rolling 18 Periods > is not defined for this fiscal calendar. Go to 'Setup Accounting > Manage Accounting Periods>'and set up or assign the period you need.

AI generated answer (using internal Slack threads):

Based on the conversations provided, it seems that the users are discussing issues related to setting up and managing accounting periods in NetSuite. In the first conversation, the user is encountering an error message stating that the accounting period range "Last Fiscal Year" has not been defined. The response suggests that the user may not have created individual periods, rather than needing to rename the period. In the second conversation, a user is trying to set up two different fiscal calendars in a new NetSuite environment, but is encountering an error message stating "Illegal period structure. Date 1/1/2024 is in multiple periods." The responses suggest that the accounting periods between calendars are not different and that the base period has to be consistent across all fiscal calendars. A link to a SuiteAnswers article is provided for further information. In the third conversation, a user is discussing the use of tax periods in different NetSuite editions. The user explains that some editions use both accounting and tax periods, while others use only accounting periods. The user also mentions that the Manage Tax Periods page will only be accessible in a US or Canada edition OneWorld account when a subsidiary or nexus that uses VAT/GST is added. The conversation also includes a discussion about the usefulness of SuiteAnswers and the Help menu for finding information. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******