Error - 'Posting Error: User (x) is not permitted to Insert this transaction' when posting Purchase Request Or Timesheets

This error is very likely to be caused by the user in question not having enough permissions in the Financials Database
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Without the correct permissions on the Financials Database the system will reject any attempt from a user in FinOps to post a transaction to the application.
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Please check that the user has the correct security permissions in the Financials Database for the transaction type. By default when granting a new user access to FinOps, the corresponding user record should appear under the FINUSER security profile in Financials.
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If you do not see the user listed anywhere in these or other security profiles in Financials, please raise a new case online and reference the title of this article.