Hello Friends.

Hope all are doing well.

After very long time I am posting about the coverage group and how coverage group will help to run the master planning.

Coverage group-

1.       Coverage group will assign to each item manually or using the wizard.

2.       If coverage group is not assign into item, system will take the default coverage group which are assign in parameter form in M.R.P module.

3.       When we run the master planning, system will show the Net requirement of the each items.

4.       Coverage group calculate the net requirement of each items using the different parameters which are available in the coverage group form.

5.       Below are detailed explanation of list of all the fields which are available in coverage group.

1.       Coverage code-

2.       Coverage time fence-

Coverage time fence and the lead time (Purchase lead time, sales lead time, inventory lead time).

If coverage time fence is 10 days and when we run the master planning system will generate the planning order which receipt schedule time is more than 10 days.

Note-

The coverage time should be equal to or more than the lead time for the item. If the lead time is

More than the time given here, master scheduling might generate planned orders that are outside the coverage time fence.

3.       Negative Day-

·         Negative day fields we define number which indicates days.

·         Suppose, our purchase order receipt schedule date is after 2 days from today and our sales order or production order issue date is today.

·         In above situation, system should have to generate a new purchase order else request to vendor to send the before days or extend the sales order.

·         If we define 2 in Negative filed in coverage group then system not generate any planned order if the purchase order receipt schedule 2 days later from today and sales order issue date is today.

4.       Positive day-

·         We can define the number in positive day field.

·         We try to understand through one simple example-

·         For a particular item, there is inventory, and a sales order is scheduled for delivery in 90 days. If you enter a number that is less than 90, a new planned purchase order is generated. If you set the positive days to a number that is more than 90, no planned purchase order is generated. However, the current inventory levels of the item are no longer available for new sales orders.

5.    Firming time fence

·         The period during which planned purchase orders and production orders are automatically firmed.

·         The Time fence is expressed in days, and is calculated from the date of the requirement calculation.

6.    Freeze time fence

Specify the period during which planned orders cannot be created. You also use this field to specify

Where planned orders from previous requirement calculations cannot be changed. All requirements that are not covered in this period are covered by a purchase order or a production order that is created at the end of the period, together with an action message that suggests advancing the date of the planned order. During the period, if an earlier requirement calculation created a planned purchase order, that order remains in the period and is not moved. The time fence is expressed in days, and it is calculated from the requirement calculation date.

Example

The locking time fence is 10 days. A sales order must be delivered in seven days, and there is no

Inventory that can cover the requirement. The requirement calculation suggests that the planned

Purchase order be delivered in 10 days.

7.    Reduction key

Select the reduction key that master scheduling uses to reduce the forecast requirements that are

Transferred from the forecast plan. Reduction keys define the time periods during which forecast

Reduction occurs, and the percentages by which forecast requirements are reduced. You set up the reduction keys in the Reduction keys form.

8.    Action message

If this check box is selected, the items are set up for action messages. Action messages suggest ways to avoid unwanted situations, and ways to change existing purchase orders and production orders.

9.    Futures message

Select this check box to activate futures messages for items.

Futures messages warn users when a sales order or production order cannot be completed by the

Scheduled date. A futures message is generated to indicate a date in the future by which an order can be delivered, considering the particular constraints.