This document explains basic functionality of Availability Check in SAP SD.

1. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 1
Availability check is a process of checking the stock availability while creating sales order.
Pre-Requisites for TOR:
1. In Schedule line category
Check availability and requirement
2. Availability check/checking group
We maintain this field in "material master sales general/plant". This field controls how sales
requirements are updated in MRP.
01 - Daily requirement
02 - Individual requirement
01:System cumulates sales order requirements of particular day and updates in a single line in
MRP.
02:System updates each sales order requirement into MRP along with the sales order number.
Note: If we maintain "01" back order processing is not possible.
KP: No check

2. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 2
3. Requirement type should be determined into sales documentThe criteria to determine
requirement type in sales document is:
I. Strategy Group
II. MRP Group
III. Item category + MRP Type
4. In requirement class
Check availability and requirement

3. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 3
Note: Requirement class will help to transfer the sales order requirements to MRP.
Configuration for Availability Check:
Availability Check can be configured in 3 ways.
1. Availability Check with ATP (Availability To Promise)
2. Availability Check with Product Allocation
3. Rule based Availability Check
I. Availability Check with ATP (Availability To Promise)
Path: SPRO > S&D > Basic Functions > Availability Check & Transfer of requirement >
Availability Check > Availability check with ATP > Define Checking group
"Checking Group" is nothing but availability check field in "material master sales
general/plant"

4. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 4
In this configuration step we can define our own checking group. The standard checking groups
are:
01 – Daily Requirements
02 – Individual Requirement
KP - No Check
This configuration step will also help to control how the sales requirement should be
transferred to MRP.
Note:Availability check is material and plant specific
II. Define Material Block for other Users:
Path: SPRO > S&D > Basic Functions > Availability Check and Transfer of requirements >
Availability Check > Availability Check with ATP > Define material block for other users
If multiple users are accessing availability check for the same material in the same plant then
system performs availability check for the first user and block availability for the other users.
In this step with the combination of availability check and initiator we check block.
Initiator: A - Sales Order C - Reservations
B - Delivery
III. Define checking groups default values:
Path: SPRO > S&D > Basic Functions > Availability Check and Transfer of requirements >
Availability Check > Availability Check with ATP > Define checking groups default values

5. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 5
If we maintain checking group here it automatically proposes by default while creating material
master.
In this configuration step we maintain checking group to the combination of material type and
plant.
IV. Carry out Control for Availability Check:
We also call it as "scope of check". We configure scope of check with the combination of
"Checking group and Checking rule".

6. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 6
"Checking Rule" specifies in which transaction we want to configure availability check.
A - Sales Order B - Delivery
1. Include Safety stock:This is the minimum stock level which company has to maintain to meet
the future emergency requirements.
We have this field in "Material master MRP 2" view. If we check this field system will consider
safety stock also while performing availability check.
2. Stock in Transit:We use this field in STO Process
In STO two-step process where we do delivery in supplying plant the stock will be displayed as
stock in transit in receiving point.
If we check this system will consider the stock which is in transit also, while performing
availability check in receiving point.
3. Include Quality Inspection Stock:If we check this system will consider the stock which is in
quality inspection while performing availability check.
The movement type for quality inspection is "503"
Note:To check the result "post the un-restricted stock" by using movement type "503"
Stock Posting - MB1C
Stock Overview - MMBE
Check and uncheck the field and check the result.
4. Include Blocked Stock:If we check this field system will consider the stock which is blocked
while performing availability check.
The movement type for blocked store is "505"
Note:Post the blocked stock and check in stock overview. Check and uncheck this field and see
the result by creating order.
5. Check without RLT:If we check this field system will not confirm the quantities if the stock is
not available.
If we uncheck this, system will confirm the quantities in future dates based on RLT.

7. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 7
6. Include Purchase Orders:If we check this system will consider the inward movements (the
purchase order stock) while performing availability check.
7. Include Purchase Requisition:In real time we don't depend on purchase requisition. Because,
it is not the exact source for getting the stock.
8. Include Sales Requirement:If we check this system will deduct the open order quantities
from stock while performing availability check.
If we uncheck this system will consider the stock while performing availability check.
Note:Create material, post the stock and check the result.
Schedule line > Environment > Availability
9. Include Deliveries:Whenever we create deliveries the deliveries will also updates in "MD04".
If we check this system deducts open delivery quantities from stock while performing
availability check.
If we uncheck this system will not deduct open delivery quantities from stock while performing
availability check.
V. Define Procedure by Requirement Class:
In this configuration step we need to check requirement and availability.
VI. Define Procedure by schedule line category:
In the configuration step we check availability and requirement fields.
VII. Determine Procedure for each delivery item category:
This configuration controls whether to perform availability check in delivery document or not.
In below scenarios we perform availability check in delivery document.
a. Delivery without reference
b. Adding new line items in deliveries
c. Increase or decrease the quantities in deliveries
d. Stock Transfer

8. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 8
Exercise:
1. Create Order without posting stock and check how it is proposing the stock?
System is not confirming any quantity as there is no stock
2. Post stock with quantity 5 and created order with 5 quantity and check
Order quantity is 5 and system also confirmed quantity of 5.

9. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 9
3. Now create order with quantity 10 and check.
When we enter order quantity and press enter system will check the availability. As we have
stock of 5 quantity system is proposing only 5 quantities.
Click on tick mark and check the schedule lines.
Even the order quantity is 10 system confirms only 5.

10. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 10
4. Maintain RLT (2 days) in Material master and uncheck the field check without RLT in
scope of check and create order.
In this scenario we can see that system is confirming the 5 quantity and proposing the delivery
date for another 5 quantity in future as we maintained RLT.
Click on the tick mark and check the schedule lines.
System confirming the quantities on 2 different dates.
This is all about the availability check. We can do same this by posting quality inspection stock,
block stock, stock in transit etc.

11. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 11
Back Order Processing:
Whenever high delivery priority customer places an order, if the stock is not available then we
go back to open orders of low delivery priority customers and cancel the confirmations and
assign to high delivery priority customer order.
Note: The back order processing is available only for those materials that have the individual
requirements i.e., in material master record the parameter for "availability check" must be
"02".
The T. Code to create checking rule is “OPJL”
The T. Code to assign checking rule to availability check is “OVZ9”
After maintaining these setting continue with the configuration for back order processing.
Configuration for Back Order Processing:
1. Checking Rule for updating backorders:
Path: SPRO > S&D > Basic functions > Availability check and transfer of requirements >
Availability check with ATP > Checking rule for updating back orders
Here we assign checking rule "BO" to our plant
If we don’t find our plant in this path, in this case we need to maintain plant parameters.
Path: SPRO > Production > Material Requirements Planning > Plant Parameters > Carry out
overall maintenance of plant parameters > Create
2. Carryout control for availability check:
Here maintain the combination for checking group "02" and checking rule "BO"

12. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 12
Note:
a. If the plant is not displayed in backorder then maintain plant parameter for that plant.
Path: SPRO > MM > Inventory management & Physical inventory > Plant Parameter
Select the standard Plant 1000 and click on copy and maintain plant parameter
b. Maintain plant parameter in production
Path: SPRO > Production > Material requirement planning > Plant parameter > Carryout
overall maintenance of plant parameters
Click on copy
"1000" in from plant
"SPI1" in to plant and again click on copy.

13. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 13
3. Define Default Settings:
Fixed date and quantity: If we check this system will not allow users to change delivery dates
and confirmed quantities.
Availability checking rule:In case of shortages system proposes dialogue box with the help of
availability check rule.
Scenario for Back Order Processing:
i. Create a Material: P-Mobile
MRP Type: PD Availability check: 02 Strategy group: 10
ii. Create 2 Customer:
112 – Low delivery priority customer
130 – High delivery priority customer
iii. Do stock posting for created material
T.Code: MB1C Qty: 5
iv. Create order for low delivery priority customer (Qty:2) and check in schedule line data

14. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 14
v. Create another order for low delivery priority customer (Qty: 3) and check the confirmed
quantity in schedule line data.
vi. Create another order for high delivery priority customer (Qty: 3) and check the confirmed
quantity in schedule line data.

15. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 15
System will not confirm any quantity as there is no stock.
So in order to confirm the quantity to high delivery priority customer do the back order
processing.
T.Code: v_ra
Enter material, plant and execute.
Select the orders from which we want to cancel the confirmations and select the order to which
you want to assign the confirmed quantity

16. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 16
Select both and click on Backorders.
Select the Confirmed order and click on change confirmation.

17. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 17
Remove committed quantity and click on okay
We can see that the confirmed quantity becomes “0”. After that click on high delivery priority
customer order and click on change confirmation.

18. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 18
Enter the committed quantity and click on okay .
And save the document.
Go to the order of high delivery priority customer and check the committed quantity in
schedule lines. System confirms the quantity.

19. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 19
Re-scheduling:
If system performs backorder processing automatically then we call it as re-scheduling.
i. Create Material and post the stock of 5 quantities. In our case it is Q-Mobile.
ii. Create order for low delivery priority customer and save. (Qty: 5)
And check in schedule line to see how much quantity got confirmed.
iii. Create order of high delivery priority customer and check schedule line. (Qty: 5)

20. AVAILABILITY CHECK
By Srinivasulu Algaskhanpet (SAP SD Consultant) Page 20
iv. T.Code for Re-scheduling is V_V2
Here we can see the for high delivery priority customer quantity has been confirmed
automatically.
And also check the same in schedule lines for high delivery priority customers order.
This is all about availability check, back order processing and re-scheduling process.