Implement the ability to enter 31 but use 30 with the formula Roundup(C * (M * 30) / ((M * 30) - X)));
Change the UI validations to allow for 31;
Remove stockout days field validation;
Add popover to that fields with message: "The system uses a 360 day calendar, if stocked out for an entire month, enter 30. If stocked out for three months, enter 90. Quantities above 30 days a month will result in inaccurate reorder calculations and reporting".
Knowing the username and the password of a Storeroom Manager (e.g. srmanager2) and a Store Manager (e.g. smanager2);
Logging into the application as a Storeroom Manager and navigating to Requisitions > Create/Authorize.