Promising Modes for ATP Rules

You can specify the promising mode of an available-to-promise (ATP) rule to determine the attributes that Global Order Promising examines when it promises your item.

Here are the modes that you can select when you use the Manage ATP Rules page to create an ATP rule.

Mode	Description	Use It When	Use it With
Infinite Availability	Don't examine anything. Assume supply for your item is infinitely availability.	For an item that has a low value, such as a screw.	Calendars
Lead Time	Examine only lead times to determine how long it will take to fulfill the item, such as manufacturing time, transit time, and so on. Assume supply is available after the lead time expires.	Your lead times are dependable.	Calendars Lead times
Supply Chain Search	Examine some or all of your supply chain. Search for supply that's actually available. For example, examine separate lead times, calendars, and transit times for each supplier that supplies components for a complex configured item.	A complex, critical item When you need to closely examine and monitor your supply chain When you need to match supply to demand, and optimize your supply chain	Calendars Lead times Factories Warehouses Suppliers

Mode

Description

Use It When

Use it With

Infinite Availability

Don't examine anything.

Assume supply for your item is infinitely availability.

For an item that has a low value, such as a screw.

Calendars

Lead Time

Examine only lead times to determine how long it will take to fulfill the item, such as manufacturing time, transit time, and so on.

Assume supply is available after the lead time expires.

Your lead times are dependable.

Calendars
Lead times

Supply Chain Search

Examine some or all of your supply chain.

Search for supply that's actually available.

For example, examine separate lead times, calendars, and transit times for each supplier that supplies components for a complex configured item.

A complex, critical item
When you need to closely examine and monitor your supply chain
When you need to match supply to demand, and optimize your supply chain

Calendars
Lead times
Factories
Warehouses
Suppliers

Infinite Availability

A type of ATP rule that assumes supply is always available on the requested date. Use this mode when you know that supply is almost always available and for items that have a low value. Its the simplest type of ATP rule, but also the least powerful.

For example, you use small, commonly available screws to attach a casing to the AS54888 computer. The screws have a low value, you maintain 10s of thousands of them inventory, and you view them as being always available.

Here's what Promising does.

Assumes the item is available, so it promises the item on the requested date regardless of actual availability.
Uses calendars when it promises the item.
If a request has a transit lead time, then promising includes that lead time when it promises the item.
Doesn't examine supply and doesn't do a search to determine whether the item is available.
Doesn't create any pegging.
Doesn't consider any other attributes.

If the requested date is the:

Requested ship date. Promising considers the calendar.
Requested arrival date. Promising considers the calendar and transit lead times.

Lead Time

A type of ATP rule that uses the amount of time that you need to assemble the item and make it available. It assumes you build the item on demand and you know how long it takes.

Assume your item is the AS54888 computer, its a configured item, so you only build it when you receive an order for it. Through experience, you know it usually takes 5 days to finish the build, from assembling the parts onto the board, through final testing.

Here's what Promising does.

Considers calendars and times.
Adds the lead time to the requested date when it determines the promise date.
Doesn't do a search to determine whether the item is available.
Doesn't create any pegging.

You can specify different types of lead times.

Total lead time
Cumulative manufacturing lead time
Cumulative total lead time
Specify your own lead time

Supply Chain Search

A type of ATP rule that searches your supply chain to determine how long it will take to make your item available. Use this mode when you have specific requirements that you can't meet through the infinite availability mode or the lead time mode. It allows you to specify more complex promising.

You can specify a wide range of factors and attributes to consider when doing the search. You can consider lead times, calendars, capacities, transport modes, and other factors in your supply chain network. It is the most complex type of ATP rule and also the most powerful.

Assume you need an ATP rule for the 4 Door Sedan, which is a complex, configured item. You get the chassis from supplier x, the engine from supplier y, the, drive train from supplier z, and so on. You can specify separate lead times, calendars, and transit times for each supplier. You then specify a lead time for your factory to assemble these parts into a product that you can ship to your customer.

Here's what Promising does.

Performs a detailed availability search across your supply chain, depending on the options that you select when you create the rule.
Considers the lead times, calendars, capacities, and transport lines across your supply chain.
Creates pegging details.

You can specify a variety of attributes that you can't specify with the other modes.

Whether to search components and resources for a configured item
Whether to enable a profitable-to-promise search
Whether to consider allocation constraints
Which types of supply and demand to consider
What lead time to use for the infinite availability fence
How many days to consider for past-due demand and past-due supply