The system runs an availability check in the supplying plant (issuing plant) for stock transport orders.
The checking rules that you define in Customizing determine which stocks (for example, stock in quality inspection and safety stock) and which receipts and issues (for example, reservations and purchase requisitions) are taken into account in the availability check.
The availability check checks the issuing storage location in stock transport orders by checking the assigned MRP area.
In the following cases, no availability check is carried out:
Stock transport requisitions from the planning run
Stock transport requisitions from the conversion of planned orders
Stock transport requisitions from other applications (sales order, production order, or network)
There is no availability check for returns items.
The availability check does not check batch stocks if a batch was entered. This function is not implemented. You may find it helpful to refer to modification notes 154682 and 350864.
An availability check does not run automatically for subcontracting components, because this may lead to problems downstream.
For more information, see SAP Notes 323991, 184726, 418832, and 208463.
Before the availability check can run in the supplying plant, the following prerequisites must be fulfilled:
Checking group
You must enter a checking group for the supplying plant in the
Availability check
field of the material master
(MRP 3
tab page).
Checking rule
Create a checking rule for the combination of document type and supplying plant.
(Purchasing
→
Set Up Stock Transport Order
→
Assign Delivery Type and Checking Rule)
Scope of check
Define the scope of check for the combination of checking group (material master) and checking rule (Customizing).
(Purchase Order
→
Set Up Stock Transport Order
→
Define Checking Rule)
Rule for availability check
Define a rule for copying ATP results to purchasing.
This rule controls how the system behaves in material shortage situations, and how the delivery proposal (confirmation proposal) is displayed.
You can control the following factors in Customizing:
Display of results
You define how the system copies results of the availability check to the stock transfer document. In other words, you define how the delivery proposal is displayed in the delivery schedule line view.
You can choose between the following rules:
One-time delivery (rescheduling: delivery proposal) – <
blank
>
This setting corresponds to the system behavior up to and including
SAP ERP Central Component, Release 5.0
.
One-time delivery –
A
Complete delivery –
B
Delivery proposal –
C
Selection window for material shortage (batch: one-time delivery) –
D
Selection window for material shortage (batch: delivery proposal) –
E
Selection window for material shortage (batch: complete delivery) –
U
The confirmed quantities can be displayed in two different forms in the schedule lines:
If you have not entered a rule for copying, or if you use the
one-time deliver
rule, the system displays user want and confirmed quantities in the same delivery schedule line.
For all other rules, the user want and confirmed quantities are displayed in different delivery schedule lines.
If you change these Customizing settings, existing orders are not converted automatically. The changed setting only takes effect if you change an affected order. To convert several open orders, you can use rescheduling.
System behavior in case of material shortage
You define how the system behaves if there is a material shortage.
If stocks are not sufficient, the system can react in two ways:
The system shows a dialog box and prompts you to choose between different options.
The system automatically proposes an option (there is no dialog box).
For more information, see SAP Notes
http://service.sap.com/~form/handler?_APP=01100107900000000342&_EVENT=REDIR&_NNUM=498149498149
–
FAQ: Availability check in purchasing
and
http://service.sap.com/~form/handler?_APP=01100107900000000342&_EVENT=REDIR&_NNUM=885177885177
–
Stock transfer in purchasing: new schedule line processing.
In the Enjoy transactions, when you change MRP-relevant data (for example, quantity, date, supplying plant, or planned delivery time), the system automatically checks availability.
The system checks the availability of schedule lines on a daily basis.
From the point of view of the supplying plant only, the system always checks the open quantity of an item according to the following formula:
Ordered quantity minus maximum of delivered quantity or goods issue quantity
If the order item was created with reference to a purchase requisition, the check ignores the requirements for the purchase requisition, because the order takes over the requirements for the purchase requisition. The also applies if the purchase requisition was only partially converted.
In the supplying plant, there are 60 pieces of the ordered material. In the purchase requisition, 100 are requested, but only 30 are ordered. If the purchase requisition with its remaining quantity of 70 were to be counted as a requirement, nothing would be confirmed in the order.
The date on which availability is checked is calculated from the delivery date minus the planned delivery time from the receiving plant.
If shipment scheduling is activated, the material availability date is used for the check.
The schedule lines of the stock transport order contain specific information about the result of the availability check, as well as shipment scheduling and transportation scheduling, if these are in use.
The result of the availability check is saved in the schedule lines according to the settings selected in Customizing
(rule for copying the results of the availability check).
The differences between individual rules are described below.
These rules have the following features in common:
The availability check only confirms quantities that are available on the desired delivery date.
The availability check includes all order items with the same material and the same account assignment.
If a document contains several items with the same material (and the same supplying plant), all of the items are always checked together. This means that a change to item 10 can affect the availability of item 20.
User want and confirmation are displayed in the same schedule line.
The user enters the following data:
Delivery date 10/18/2006
Schedule Line Quantity 10
The availability check shows the following availability situation:
Quantity 6 available on 10/18/2006
Quantity 4 available on 10/25/2006
The result of the availability check is displayed in the delivery schedule line view as follows:
Delivery Date |
Schedule Line Quantity |
Confirmed Date |
Confirmed Quantity |
---|---|---|---|
10/18/2006 |
10 |
10/25/2006 |
6 |
These rules differ where rescheduling is concerned:
One-time delivery (rescheduling: delivery proposal) – <blank>
Rescheduling adjusts the delivery date requested by the user to the availability situation.
One-time delivery – A
Unlike the rule
One-time delivery (rescheduling: delivery proposal),
rescheduling
changes only the confirmed date and confirmed quantity, not the user want.
These rules have the following features in common:
The availability check only checks the order item in question.
Rescheduling changes only confirmed dates and quantities.
User want and confirmation are displayed in different schedule lines.
Complete delivery – B
The availability check confirms only the total requested quantity on the date of its complete availability.
If the requested quantity is not completely available at any point in time, no quantity is confirmed.
According to the
complete delivery
rule (rule B), the result (described above) of the availability check is displayed in the delivery schedule line view as follows:
Delivery Date |
Schedule Line Quantity |
Confirmed Date |
Confirmed Quantity |
---|---|---|---|
10/18/2006 |
10 |
10/25/2006 |
|
10/25/2006 |
10/25/2006 |
10 |
Delivery proposal – C
The availability check confirms the quantities on the date of their availability. Partial quantities can be confirmed on different dates.
According to the
delivery proposal
rule (rule C), the result (described above) of the availability check is displayed in the delivery schedule line view as follows:
Delivery Date |
Schedule Line Quantity |
Confirmed Date |
Confirmed Quantity |
---|---|---|---|
10/18/2006 |
10 |
10/25/2006 |
|
10/18/2006 |
10/18/2006 |
6 |
|
10/25/2006 |
10/25/2006 |
4 |
Rules for material shortage (rules D, E, and U)
In case of a material shortage, the system shows a dialog box and prompts you to choose between different options.
If purchase order processing is in the background, the following rules lead to the following system behavior:
Rule D: Selection window for material shortage (batch: one-time delivery)
If purchase order processing is in the background, the availability check only shows the quantities that are available on the given delivery date, as for rule A
(one-time delivery).
Rule E: Selection window for material shortage (batch: delivery proposal)
If purchase order processing is in the background, the availability check confirms quantities on the date on which they are available, as for rule C
(delivery proposal).
Rule U: Selection window for material shortage (batch: complete delivery)
If purchase order processing is in the background, the availability check confirms the total given quantity on the date on which it is available, as for rule B
(complete delivery).
If the system cannot confirm the total quantity (for example, if the check does not take replenishment lead time into account), the date is changed to 21/31/9999.
If the complete desired quantity is not available on the desired date, you see message 06 450, which you can define in Customizing as a warning message or an error message.
For more information, see SAP Note
http://service.sap.com/~form/handler?_APP=01100107900000000342&_EVENT=REDIR&_NNUM=885177885177
–
Stock transfer in purchasing: new schedule line processing.
You can run the availability check manually in stock transport orders (and in stock transport requisitions). To do this, choose
Check Availability
For more information about the availability check in inventory management, see Availability Check .
For more information about the availability check in shipping, see Working with the Availability Check in Shipping .