Verification needed to disallow users creating purchase orders with ‘Accounting date’ in an closed or non-exiting period.

Users may mistakenly add an ‘Accounting date’ for a period in a calendar year which does not exist. If this is the case, the purchase order will be blocked until the period in the first available year is opened for the Purchasing module. A check should be considered, to disallow users, to add an ‘Accounting date’ for a non-existing or close period.